Re-homing my Great Pyrenees (Snohomish)

I have 3 years old female Great Pyrenees for rehoming.
Snow is not spayed.
We had her since she was a puppy and she is up to date with her shots.
She is doing great with kids and babies.
She is aggressive with some dogs which walking around the house but playful and nice with other dogs at the dog park.
I have a baby and she never hurt him and always gentle.
For personal reasons I have to rehome her ASAP.