Straight up, you need to protect your daughter.

If this were my family (HIGHLY unlikely), I would have his legs
broken and a generic message passed that he is plowing in the
wrong field and subsequent visits would get increasingly worse.

Do not do this yourself. Be in the presence of a few dozen other
people at the time it goes down so as to have an alibi.

You will likely be able to hire a few hard hittin' naggars to do the
job for nothing more than a sack of weed and bottle or Patron.

Your job is not to be your daughter's FRIEND.

Your job is to be her PARENT, a job that never stops regardless of her age.

Protect her.