Playing favorites?

First, a little explanation: Lolli lives with a family of four--mom, dad, and two daughters, 17 and 21. I'm Rachel, the oldest daughter, and I'm in college right now. I made this profile as if Lolli were my dog, but technically Lolli is my mother's. We had lost our previous dog, Lexi, in April, and Lolli was a Mother's Day gift for my mom. So technically, I guess I should be identifying myself as Lolli's "sister" instead of "mom." Or maybe a second mom, who knows.

Anyway, my mom has ALWAYS wanted a Yorkie, so Lolli is very special to her. While I'm away at college, Lolli provides my mom with a lot of company during the day. Lolli follows her around the house and takes naps on her hap. However, any time I come home from college, it's very obvious that Lolli favors me. She follows me everywhere and always sits with me. In fact, if I have been up and about, she will get up off my mom's lap to come lay with me once I do sit down. She brings her toys to play with me. She comes when I call her, but will run from my mom.

I can tell it really hurts my mom's feelings that Lolli doesn't like her as well as me. My mom is absolutely crazy about Lolli, and gets so disappointed when she picks me over my mom. It especially breaks her heart when Lolli gets up from my mom's lap to come sit with me instead. She'll say sadly, "Lolli likes you better than me" or "Lolli, why don't you like me?" I love little Lolli to bits and really enjoy cuddling up on the couch with her, but I wish I could get Lolli to quit favoring me and give my mom more attention!

Does anyone have any suggestions? It's not like I'm going to just push Lolli away when she comes to me, but I wonder if maybe there's something my mom could do to become Lolli's new favorite.