I wish I had MORE of an update. :(
Mom just called, she's been to see her doc this morning (after an abdominal CT scan yesterday). Her blood count has dropped again (low hemoglobin and hematocrit) which tells him she IS bleeding internally *somewhere*. The CT was inconclusive, though, so he's admitting her to the hospital today for more tests and more blood. That's all I know so far. She sounded tired again, and she's more than willing to go in because she wants this fixed. I have a lot of faith in her, she's tough. I just wish I were closer, for right now.
Mike said "go home" if I need to. For now, though, I know there's not much I can do there, except pace her new living room carpet threadbare. Guess I'll go melt glass instead.