That would be great~!
If you need an idea on how to implement it, if you just repeatedly click stay, the vore scene happens, but if you wait until her stomach growls, and offer her… I dunno… A rabbit(maybe?) you get an alternate ending.
Again, worry about it after your current to do list is done, since I imagine new art will be needed for new endings…
Do keep the vore ending, though, I quite like it.