Mother always likes to go out dancing.

Ballroom dancing is a normal social activity. If your mother just likes dancing, don't interfere with her too much without affecting her family life. Of course, you can and need to communicate with your mother often. After all, this is the current social atmosphere. You just enjoy dancing, but you can't guarantee that your partner has the same pure purpose. I think the most important thing for you now is to tell your mother this truth through reasonable skills. I believe she will understand. In addition, you should also communicate with your father. I think the cooperation between them is the most important thing at this time.