Hi Alana!
I know that feeling...I was so scared when Brooky went in for hers! But it was all fine.
Usually the dogs bounce back in 24 hours...Brooky took about 3 days because she had some additional issues, but was just fine. The first night might be a bit distressing for you (not her) because it is hard to see them hurting or feeling sorry for themselves. They can also get a little shaky after a surgery, so keep a t-shirt or jacket around if you think she is getting cold (though doubtful with it being summer). They should send you home with pain meds, and at any time if you feel like Bella is not dealing well with the pain, call your vet right away and you can usually go pick up something a little stronger. Just keep Bella quite for a few days, no jumping, and I think after 4-7 days you can do light walking.
Every dog is different as to weather they will leave their stitches alone or not. Brooky had to wear a cone on her head because she would just go for them (even if I had a t-shirt on her to cover them up). Best to have one on hand, the vet will most likely give you one.
Also, just feel her some scrabled eggs, chicken maybe some rice for the first night and day, little bits at a time. Also, lots of water (I had to bring Brooky hers because she never wanted to get up and go to the bowl the first day).
Then....in a blink of an eye...they are back to normal! Literally, it's like you are turning around and they will be acting like nothing is wrong again
Stoic little creatures. It is usually hard on us (emotionally) than them
Good luck and hugs to Bella!! Once she heals up, let's plan a puppy play date maybe at that dog beach in Mosman I was telling you about?? Or a good dog park