My landlady wants to empadronar in my apartment for a parking spot

My landlady sent me a message that she would like to register in my apartment and she openly said that it’s is because she wants to apply for a parking spot in this area. I can’t blame her, it’s a very lucrative area.

But I’m wondering what risks there are involved. I guess my biggest fear is that if she’s empadronada here and this is her apartment one day she could just claim that she also lives here and try to make my life difficult and that way. She seems like a nice person and we haven’t had any problems, but you never know how things can change.

So I wonder if anyone can tell me what is the worst thing that could happen if I authorise her to register in my apartment.

If the risks are small or non-existent, I would be happy to do that also to maintain a good relationship with her, and it could come handy that she owes me one.