friend problems?

if she is your true friend you need to (should anyhow) tell her that there are certain things/behaviors/etc that make you feel uncomfortable. if she listens and values your feelings, that should help.
now as far as the other friends thing goes, i found that sad. a true friend should acknowledge you no matter who is around. that said you and the chick don't have to have the same circle of friends... maybe some friends are better on a one on one basis?
never hesitate to say that you feel uncomfortable at anytime - you are truly the best friend you will ever have
you also don't need a bunch of kinda friends one true friend is better than a million aquaintences

i wouldnt consider her as a friend anymore really. should slowly push her away because if you tell her you dont like her anymore you get dramatic girl talk with your age

She doesn't sound like a good friend to me, especially if she making you feel unwanted around her other friends. Sometimes it best to let go of toxic friendship.

she could be using you; just be on guard if that is the case. you don't need many friends, just a few quality ones you can count on.

I don't see an issue here. But, if you are unhappy, find another friend.... and move on.