Sort of a rescue, need advice

[Mjjean]

My younger brother has 3 dogs, 2 ABPT's and an APBT mix. His house has just been discovered to contain black mold and he has to move asap for the health of his family. He has found a new place, but the landlord is only willing to let him keep 2 dogs, so I have decided I will take the 3rd rather than see her go to a shelter as he only has a week to find her a home before the move. He tried his friends and rescues, but no one else wants her

Her name is Princess. She is a year and a half old, she is well socialized with people, kids, dogs and is pretty obedient. She will be living with me, my kids, my dogs, cat, bird and tortoise. She has stayed here for a few days in the past and visited with my dogs many times. They get along wonderfully.

Her whole life is about to change. She will be coming home tomorrow afternoon with her crate and leashes along with a few toys. What can I do to make things easier for her? How can I treat her in the first few days so that she understands that I am her new leader? What can I expect from her behavior wise? I assume she will act differently here than she did with my brother because we are a different home withdifferent people and pets as well as different routine. Any help or tips appreciated!