It's not that Jeff is reading too much into it; it's that you're not reading enough into it.

You think that if you're given a list of, these are the things that your mother can be held responsible for, you can then refute how this or that thing will not happen and thus convince your mother to let you have your way.

Not gonna happen.

You've already been given the answer; Your mother can be held liable for EVERYTHING you do.

Also, NOTHING in the law is going to force her to let you move out if she doesn't want you to.

That's all there is.