McElroy presided over a number of events and honored former First Ladies Julia Tyler and Harriet Lane , James Buchanan 's niece and social hostess , by asking them to help her receive guests at the White House .
McElroy presided over a number of events and honored former First Ladies Julia Gardiner Tyler and Harriet Lane , James Buchanan 's niece and social hostess , by asking them to help her receive guests at the White House .