Thank you all for your support!
Last night we were all sitting on the futon and she was between us and in the blink of an eye she was on the floor
Scott called it "graceful" and there was no thud or hard hit on the floor, but she still got down on her own which is a huge mistake on our part. I was upset all night, I felt sick about it. I should have been watching her better. She didn't twist her back or fall on her back, so Scott is trying to reassure me it's okay. All she wanted was a drink of water. From now on she's only going to be in her crate unless she's going to the bathroom of we can have our hands on her constantly.