Your presentation is passive-agressive.
You are not anyone's "dad."
You are living under your mother's roof. Presumably she supports the two of you?
She is not beholden to your opinion, nor ours for that matter.
You also don't give sufficient information to form any opinion.
What is this about seven years?
How old are you?
When you are capable of moving out, and paying your own bills, you will be free to do more of what you want.
No one can legally hold you hostage once you are of age. (I am assuming you haven't been declared to be of unsound mind, nor in legal trouble she has taken responsibility for.)
Why is "give up," in your post title? You just have to wait, that's all.
You are not entitled.