I’m going to echo what Benny said. Dogs are like people in that they recover differently depending on the person/dog. Some dogs are up within the day and the day after are trying to play and jump and some dogs need help. Either way, Ophelia will need to be around someone that can help and keep an eye on her. I bought a futon mattress and slept on the floor in a huge pallet with my boy until he was ready to use the ramp to the bed. Almost 2 weeks is slept on the floor but I was being conservative. You will need to keep Ophelia from jumping on furniture and up stairs. But your doctor will walk you through all that.  Depending on your baby’s overall behavior,  anxiety meds could be prescribed to help keep them calm and promote resting. Rest is important and moving at the individual dog’s pace being patient with them is key. 

With that said, talk to your ex and explain the detailed care they will need. Ophelia shouldn’t be in a car for at least 14 days after surgery. Remind your ex it’s not about who can provide better care or who knows the dog better or anything, but it’s simply all about what’s best and safe for Ophelia. And, as you pointed out, Ophelia spends most of the time with you so you know her a little better and can monitor her behavior and stuff to note any changes. Sounds like it would be more convenient to have Ophelia be with you where she can be looked over consistently. Some people recommend kenneling or confining but if your dog is generally calm anyways and you’ll be around, you shouldn’t need it. I didn’t even use the inflatable or plastic e-collar at all with Kota. The first several days he spent sleeping and resting. I even brought food and water to him to limit motion sometimes. I’m hoping your ex understands!