"Boon", Madeleine E. Robbins

NT F&SF (Fantasy & Science Fiction) Feb 2006 – fantasy
Elves have come to New York City. Young unmarried mother Mia, who is just scrapping by with a waitress job, is uncomfortable with elves. After the lady who watched her baby daughter takes ills, Mia reluctantly hires a gnome couple as child sitters.

This is an entertaining contemporary fantasy tale.