Was my mom right to say this

Last year I witnessed my friend being sexually harassed and I got called out of class to explain it and my friend and I got sent to the SRO and then we had to go to the police station and explain what happened.

Now its a few months later and my mom is worried about me going to a football game with my friend tomorrow night Bc she ‘doesn’t want us to get in trouble.’

I got mad and she started to tell me I’m not allowed to get mad at her Bc she’s had enough with the cops, then she went upstairs and told my dad about it but my dad didn’t say anything to her he just shook his head he’s like he was listening

Also btw when the cops called my house my mom was telling me to say ‘I didn’t see anything.’ Even though my friend knew I was there