My mom's kitty is coughing or hacking which seems like she is trying to get a hairball up. She didn't eat last night or this morning. A friend gave her some vasoline (she won't take laxatone) and she hacked but no hair ball. We have a call into our vet hoping he can see her this evening. Is there anything we can do to help her. We have seen her drink water and she has moved around a little.