Tammy,
Welcome to the forum! I'm sure you'll find a wealth of good suggestions here.
In order for people to respond with good suggestions, you might want to add some information on what kind of food your mother likes, what location is optimal, and whether there are any special considerations, (like valet parking needed, low noise level, etc.)
Is a nostalgic atmosphere optimal? Are there any vegetarians in the group? Are you interested in something cutting edge? Also, a general idea of the per person budget helps to narrow it down a bit.
Man : I can't understand how a poet like you can eat that stuff.
T. S. Eliot: Ah, but you're not a poet.