Question: Which member of Celtic Woman appeared in stage productions of Grease and Legally Blonde the Musical?

full_context: Document 1: Máiréad Carlin: Máiréad Carlin is an Irish singer and a member of the ensemble Celtic Woman.
Document 2: Suzan Brittan: Suzan Brittan is a female actress and trained vocalist from Vestal, New York. She graduated from Ithaca College, NY. She is well known as the lead singer on the Robbie Rivera/Axwell track "Burning", which went to number one on Billboard Hot Dance Music/Club Play chart in 2004.
Document 3: Angela McCluskey: Angela McCluskey is a Scottish singer-songwriter based in California. She performs as a solo artist and as a member of the folk rock group Wild Colonials. McCluskey has also provided vocals for Curio and recorded the European dance hit and US Mitsubishi commercial hit "Breathe" among other songs with Télépopmusik (on albums "Genetic World" and "Angel Milk"). Angela also sang "Beautiful Things" for American Express and more recently her voice can be heard on the Schick Quattro commercial singing "I’m Not the Girl". Her songs have appeared on the soundtracks for the films "Rachel Getting Married", "Sherrybaby", "The Beat That My Heart Skipped". Her music has also been featured in the TV series "Grey's Anatomy".
Document 4: Lucy Durack: Lucy Durack (born 17 November 1982) is an Australian musical theatre performer recognised for playing Glinda in the Australian production of "Wicked", and Elle Woods in the Australian production of "Legally Blonde: The Musical".
Document 5: Siobhan Dillon: Siobhan Patricia Dillon (born 1 September 1984 in Lichfield, Staffordshire) is an English actress and singer, who rose to fame when she performed in the British talent show-themed television series "How Do You Solve a Problem Like Maria?" on BBC One in 2006. Since then, Dillon has performed in the West End, playing the roles of Sandy in "Grease" at the Piccadilly Theatre, Vivienne Kensington in "Legally Blonde" at the Savoy Theatre, Sally Bowles in "Cabaret", Molly in "Ghost the Musical" at the Piccadilly Theatre, Ellen in "Miss Saigon", and Betty Schaefer in "Sunset Boulevard" with the English National Opera. Siobhan reprised this role at the Palace Theatre in New York City.
Document 6: Susan McFadden: Susan McFadden (born 8 February 1983) is an actress and singer born in Dublin, Ireland. She is best known for playing the roles of Sandy in "Grease" at the Piccadilly Theatre and Elle Woods in "Legally Blonde the Musical" at the Savoy theatre in London's West End. She has also been a member of the all female Celtic music group, Celtic Woman, since 2012.
Document 7: Celtic Woman: Celtic Woman is an all-female Irish musical ensemble conceived and created by David Kavanagh, Sharon Browne and David Downes, a former musical director of the Irish stage show "Riverdance." In 2004, he recruited five Irish female musicians who had not previously performed together: vocalists Chloë Agnew, Órla Fallon, Lisa Kelly and Méav Ní Mhaolchatha, and fiddler Máiréad Nesbitt, and shaped them into the first lineup of the group that he named "Celtic Woman", a specialty group. Downes chose a repertoire that ranged from traditional Celtic tunes to modern songs.
Document 8: Celtic Woman: A New Journey: Celtic Woman: A New Journey is the second on-stage production by the group Celtic Woman. The show was filmed at Slane Castle in County Meath, Ireland and featured Hayley Westenra as a new addition to the group. The album was released on 30 January 2007. This album broke a long-standing record when it surpassed the 81-week run of the original "Celtic Woman" album. The Celtic Woman performers change their outfits at least three times.
Document 9: Celtic Woman (album): Celtic Woman is the eponymous debut album of Irish singing group Celtic Woman. The members of the group were first featured on a PBS musical special of the same name. With the help of the said special, Celtic Woman reached #1 on the World Music charts within weeks and remained there for a record 81 weeks.
Document 10: Susan Fitzgerald: Susan Mary Theresa Fitzgerald (28 May 1949 – 9 September 2013) was an Irish actress, best known for her work in television and her work in Irish theatre. She also played the role of May in Samuel Beckett's "Footfalls" for the Gate Theatre's "Beckett on Film" project. At her death she was hailed as "one of Ireland's best known stage actresses" and "the pre-eminent stage actress of her generation and beloved of theatre audiences."
Document 11: Celtic Woman: Voices of Angels: Celtic Woman: Voices of Angels is the eleventh studio album by the group Celtic Woman. "Voices of Angels" features vocalists Susan McFadden, Mairead Carlin, Éabha McMahon, and fiddler Tara McNeill, with former member Méav Ní Mhaolchatha as a guest. This was Celtic Woman's first album to feature their newest member Tara McNeill.
Document 12: Mairéad Ní Mhaonaigh: Mairéad Ní Mhaonaigh (] ) (born 26 July 1959) is an Irish fiddler and the lead vocalist for the Irish folk music band Altan, which she co-founded with her late husband Frankie Kennedy in 1987. Today, Mairéad is recognised as a leading exponent in the Donegal fiddle style, and she is often considered as one of the foremost singers in the Irish language, her native tongue. She was part of the Irish supergroup T with the Maggies who performed in January 2009 at Temple Bar TradFest in Dublin their first ever two concerts under that name and who released in October 2010 their debut (and to date only) album. After nearly 22 years with Altan, Mairéad released in February 2009 her debut solo album "Imeall". After 29 years with Altan, Mairéad released in October 2016 her alternate band Na Mooneys' debut album "Na Mooneys".
Document 13: Lisa Kelly: Lisa Ann Kelly or Lisa Olivia Mary Sinead Kelly (Irish: Laoise Ní Cheallaigh, born May 7, 1977) is a singer of both classical and Celtic music. She has taken part in many musical theatre productions and concerts, and is a founding and former member of the musical group Celtic Woman.
Document 14: Blue Angel (Strawbs album): Blue Angel is a studio album by English band Strawbs. It was the first Strawbs album in 12 years to contain new material and featured several different line-ups of musicians from past Strawbs eras. Welsh folk-singer Mary Hopkin featured on many tracks, continuing a working partnership established by Dave Cousins and Brian Willoughby on their album "The Bridge", from which several of the tracks on this album are drawn.
Document 15: Susan McCann: Susan McCann (born 2nd February 1949) is an Irish-born country and Irish singer, with an enduring and international popularity, who has recorded some 650 songs and toured around the world and performed at numerous prestigious venues including Carnegie Hall and Dollywood McCann has had recording deals in South Africa and toured Russia, has been recording of over 40 years, and has sung for former US President George H. W. Bush. and son George W. Bush. Her 1977 hit "Big Tom is Still the King" become a Number 1 in the Irish pop charts. She made her first appearance at the Grand Ole Opry in 1979, and won the European Star Award in 1980. She continue to release new albums, including "Through the Years" a compilation triple disc album in 2015.
ground_truth: Susan McFadden