I think she is intrigued by your attraction but something insider her is holding her back. This may be the first time a girl took interest in her. Give it time and don't push for anything to happen just be yourself and her friend.
What Does It Mean When A Girl Stares At Another Girl? I'll Turn & Look Over At Her & She Is Looking Right Into My Eyes. I Asked Her Out But She Said She Likes Guys. What Does This Mean? She Still Stares.
I think she envy's you. Like's something of you & willing to copy you. I see this it happens to me and my bff. -no homo-
Sounds like she is in denial
It probably just means that she thinks you look pretty. Just because a girl stares at another girl DOES NOT mean that they're bi/lesbian. She might just be looking and making eye contact. I see people look at other people's eyes all hte time, so it could be that too. If she is making eye contact, then it's probably just to show that you're being acknowledged.
But there is still the posibility that she is lesbian and hasn't come out of the closet yet. Some people can be very sensitive about that, so don't ask her if she is or not, and don't let her see you saying anything about it either.
She may not like you, or she thinks you might have/know something she doesn't. I'm a boy, so I may not be correct.