Broken ribs??

[Bogertophis]

I would imagine that broken ribs would be tender. Does she react defensively when you touch her?...

Not necessarily, & if she has broken (aka "fractured") ribs, you shouldn't push on them to see if they're tender- it could cause internal injuries & bleeding.

I don't know what that is, but I doubt it's broken ribs. It's affecting too large an area. If it were broken ribs, we'd be talking about half a dozen ribs or more. I don't think a fall would do that...

Not necessarily. It could be any number of broken ribs, IF that's what this is.