(((Purple))),
This is just a thought but can you take a train to get to that destination? It would be something different and an adventure for your daughter.

It sounds like your bf will be driving? Then maybe you can sit in the back with your daughter and have some coloring books, some books to read to her and maybe you can also just take a nap as well. Or maybe you can plan a stop as well where you all get out of the car and go and see something like a small museum or an interesting Old fashioned Ice Cream shop along the way.

I can understand that 7 hours is a long ride and I think it would be more helpful if you found ways to break up that drive with interesting pit stops. And I think that you should also plan on staying in a nice hotel with your bf and then also plan some interesting pit stops on the way home as well on Sunday. You have been cooped up in the house a lot, so it would be good for you to make this journey more interesting instead of it all being a huge imposition.