uh, sounds like she's so possessive of you.

don't bother about her, seriously, you are not hers, she can't control ur life, you can make friends and date with anyone u want.

if she's mad, let her be, don't let it ruin your day.

You can still be friends with her
She sounds jealous and in some situations that means they love you and dont want you taken away from them. Make it clear to her that its your life and she can't tell you what to do

I agree...

She doesn't own you she has no say in what you do or any right to judge you or dislike you for such stupid reasons.
It's probably just as well you aren't friends with her anymore, because seriously, who needs a friend like that?