Complex sentence: She was accompanied by her fiancé, Jeff Daly (Mark Ruffalo) who is worried by Sarah's reluctance to wear her engagement ring, which she said she did to avoid taking attention away from Annie.
Split into simpler sentences: She was accompanied by her fiancé, Jeff Daly (played by Mark Ruffalo). Jeff is worried by Sarah's reluctance to wear her engagement ring, which she said she did to avoid taking attention away from Annie.