Call her dad, let him know what she and you decided and you don't want her to be "out in the cold", but you've broken up and it would be best for her if she could stay with someone else while she's looking. Ask him to call her.
Then, tell her you've talked to her dad (even if he hasn't called) and you'll be helping her get her things over to his house (with the dog). Be pleasant. No arguing.