toxic friend?

Riley
Okay so earlier this week I was followed home and I had Snapchatted My "bestfriend" telling her I was being followed in all caps and she left me on read until the next day when she demanded to know what happened and when I told her I needed some time to think she asked why and said she didn't look at my chat because it was a "black screen and that's usually your streaks" even though it wasn't it was if my turquoise blue shoe and she got her parents involved telling  me to talk to her and that I should have told an adult instead of her but I told my mom and she hadn't awnsered because her phone wasn't working. Most of my friends tell me that I should stop being her friend because it's a a one sided friendship and that I keep giving and she doesn't do anything for me. So I don't know what to do can someone help me decide if I should tell her I don't want to be her friend? And if I do how do I do that?