So she’s kind of been reluctant in people knowing where she lives. And from my understanding you can just leave if you want but when it comes to her house. And since yeah it’s her house I do wonder where the boundary lays. So I am an adult yes and my mom is out right now with my sister taking care of me and staying around the house which has me worried but she said she would be back either Sunday or Monday and I’m planning on taking my chances Sunday. But seriously what is the rules as it comes down to there are cameras my sister has access to so I think she might see me leaving anyway and question me on this. So what exactly are my rights as an adult? Can someone pick me up in the driveway and we just leave together and then come back home? I do think even if I leave and come back home that can show some form of trust and then I can eventually tell my mom what I did when she gets back home. I even hope I can use my recent birthday as an excuse to start dating. But the main point I want to bring up is if I can tell someone where I live and have them pick me up outside the house?
Informal tenancies seem to be state-dependant from what I can find (more concrete in california and florida), though I’d be fascinated to see if this has been legislated or litigated upon more generally. Of course verbal contracts are valid contracts, but that’s the sort of thing that would probably have to be sorted out in court.
In the end as advice for OP, I stand by the opinion that “they can’t kick you out without notice” is not a good idea to base one’s decisions on. You could be kicked out, whether it is legal or not, and the legality of such a no-notice kick out on a verbal and informal contract is certainly not an entirely non-disputed concept in all states.
OP could get kicked out, and maybe they could take their mother to court to try and get that solved eventually, but in the immediate they would end up houseless and in a pretty dire situation.