Is it disgusting to use the same teabag three times?

I am seeing a girl a few weeks now and she is decent.Started staying over at hers and have noticed she has a disgusting habit. It's putting me off her.She leaves used tea bags lying on the sink and when she goes to make a fresh cup of tea she will just use one of the old bags. Sometimes she uses the same bag three times.Totally all for someone being into the environment but is she alright?Who uses a tea bag more than once in all honesty?