Well it doesn't look good -- but it doesn't necessarily mean that it's IBD.

IMO - at this point it looks as tho if she isn't dead soon she's not far from it -- find a good reptile vet in your area give them a call and let them know what you've got and take her in (dead or alive) for testing asap -- better to sacrifice the one to know what you have than to sit around waiting for the rest to start falling.