Thank you everyone for your input, it is being processed and I see that this is quite serious and should be taken that way. It makes me feel sad thinking that they would be happier alone.
I live with 2 spayed females that can't get along. It's exhausting.
First, spaying an actually make a dog more aggressive because her hormones are out of whack. I wish I had known that prior to spaying Sierra specifically for aggression. But that is not relevant to your situation anyways just an interesting note.
Return the your daughter's girl to the breeder. A wise friend put it this way when I wanted to adopt an adult male....let her be somebody's baby instead of your management headache. Your daughter is obviously not ready for a dog and you need to make the right decision for the dog, which is get her into a home with no other females and someone that has time to work on her issues.
We are a very animal oriented family, and would try everything before we rehomed. My whole life is about pets, work included.
They do play ALL day together, all in fun. Sometimes it gets a little serious, but they stop right away.
So far the serious fighting is when they are super excited to go for a car ride, they fight on the way to the car. So the energy is very high. We now leash them when approaching the car.
I do have another option.
I work from home, but it is in a separate space, not in the 'home' but detached from the home. I could bring one in the morning and one in the evening.
They really are the farthest thing from unhappy from what I can tell.
My husband is the golden boy, God's gift to everything
dogs included. His attention is what they compete for.
I am serious about trying everything, I am actually considering going to a dog training school in January so I can train them myself.
We had a GS cross for 15 years (RIP last Dec.), he was a very cherished member of our family. It is a big adjustment! It was a shock that these dogs could see and hear us; we were so used to having a deaf and mostly blind dog we had to carry everywhere most of the time.