Thanks, guys. I think we're headed to the vet tomorrow. She pooped this morning but she's still worrying me. Sometimes the vet fee is worth peace of mind.

I'll ask about the lactulose, however, I think this is the one that she throws up. For whatever reason, her tummy just can't handle it.

ETA:
Yes, KAK, she lets me clip her fur. It's far from professional looking but it beats the stress (and price) of taking her somewhere!