Thanks for playing. For me, I would put Fubuki on WASD and set Flare to none, assigning her to follow Fubuki. Before entering the house, you can hover the mouse over Fubuki and press the 2 key. Flare will keep following Fubuki, even if they proceed to the next house.
Oh okay, i didn't know you could do that, i just thought you had to somehow control 3+ characters at the same time lol, but yeah that deninitly makes it simpliler