I've been to room service a few times but I avoided her.  If she's who I think you mean, I thought I read at least two reviews on her a while back on TBD where she supposedly fell dead asleep (as in unable to wake her) during at least 2 sessions.

A friend of mine told me that could be sign of drug use.  I wouldn't know since:

a. I didn't have any visits with her (nixed due to her smoking reviews and I don't like strong smoke smells during a session

b. I don't take drugs, I never have

-Shy