My mom needs my Social Security number but I plan on not giving it to her.
Is there something special about your social security number?
She might try to use it for dangerous purposes and go to jail.
Do you know the reason why your mom wants it? You should trust your mom isn't going to do something illegal with it. I'm sure there must be a valid reason behind her request.
She might go to jail if she uses it without my knowledge.
You may be worrying too much about this. Most likely she needs it to file something and it's as simple as that. Best thing to do is talk with her and see what she actually needs it for.