Gay & Lesbian Teens Support Group
This community is dedicated to teens that identify as Gay, Lesbian, Bisexual or Transgender or are questioning their sexual orientation. It's a supportive community where LGBT & questioning teens can give or get advice from their peers or just hang out. Please do not join this community unless you meet the description above. Thanks!
But just explain that you two are just friends that you're not interested in her and nothing will happen. If that doesn't work, just accept it till you get a little bit older (I don't know how old you are) then work from there.
But, if I were you, sure about yourself and with an open relationship with your mother (I guess it is) and you already told her you are not interested in her. Just ask her to put herself in your shoes... She's your mother, probably one of the persons who knows you best. Start from there, take it easy. Tell her that you are going to be as honest as you can be and tell her what's on your mind. Nice and easy :) Try to make her understand that is not exacly the same our relationship with girls and boys. Show her that she thinks that it's like a sleep over with a boy, and that boys are not to be trusted, show her that girls are not boys. Maybe you already did all this... Maybe not. Sometimes a good conversation can take hours and in the end it always worth something. Maybe she will say no again, but you are building a path to your next sleepover ;)
Like I said... I'm not a big of an example :D
Goog luck !!
Kiss kiss XD