When i first moved in with my husband he had a big 4X6 picture window with a thin 4in ledge
It now has a 10in wide ledge.

Is there anyway you can make the ledge wider?
can you put a chair or an ottoman under the ledge so its less of a drop should she fall?

Do they sell the pet step there? Cant get the picture on here but you can check out Petco.com
Brinkmann Pet 4 Step Pet Steps or something similar.

I hope the pain meds make your baby feel better

Happy Birthtday pretty girl and I hope you and your Mommy have many many more happy healthy years together