Australian Shepherd - 2 years old (Ventura)

Hello everyone, we have a 2 year old Australian shepherd puppy that belongs to my sister.
She had to relocate do to work and we try taking her in.
Unfortunately we already have our two other pups and just don’t have time and space for her.
She is a loving dog, gets along with other dogs, kid friendly.
She does great on hikes and off the leash! Our backyard is about 1200 sqft but I think she might need more room to run! She is young so has a lot of energy.
We would prefer some with a big back yard like a ranch or yard.
NO RE-HOMING FEE but I will be asking to come visit her new home.
Thank you!