In short:
Nena was spayed last week Thursday and I had to rush to the vet last week Saturday because she had a swollen eye (it was a foxtail).
We went to the vet today for a check-up.
The vet checked her incision and it is healed completely
She can be a normal dog again and doesn't need the onesie anymore.
The vet checked her eye as-well and it looks healthy. I just have to finish the eye ointment I got Saturday
Thanks everyone for all the help and thoughts