Even though she doesn't have "the right" she will probably still try to tell you who you can date and be friends with.
You are living with your mother who raised you and continues to have your best interest at heart. As a mom, it's not easy to just "cut" that off.
So, until you are able to move out, be respectful, follow her rules and find healthy ways to keep your frustration under control; ie: exercising, journaling, music, watching videos.
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What's your source?