While I doubt there will be anything to worry about legally (unless your uncle and aunt are actually fucking insane and you’re in an area where previously lawsuits are the norm), all of this is very solid advice and good life lessons.
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Hell, there might be some other internal issues that your mom is facing (maybe she has some unresolved abuse issues from her past), so don’t hold it against her until you have that conversation with her. While she might not be able to give you the benefit of the doubt because of something you don’t have the knowledge on. Be the bigger person and give her that benefit until you know better.