I have been asked to act as sitter for her 20 year old sister (M). The proposed event will take place weekend after next. It will be at SWIM’s house and the only other person present (apart from M) will be G (SWIM’s partner). It will be M’s first LSD experience. G is aware of the plan and will be there for general support (but in the background, so as not to freak M). I am very excited/honoured/awestruck that M would ask her to fulfil this role. She has lots of tripping experience but has never acted as a sitter: She would love to say yes, but has some doubts generally (do doubts make it impossible to be an amazing sitter?): She is looking for opinions from people who have been in this situation (do people even have sitters these days?) 1) M is much younger. I wasn’t around when M was growing up. As a result although M is an amazing sister I don't feel she knows her as a "friend". Despite this they have a close relationship and M says that she wouldn't have asked had she not trusted SWIM implicitly. However SWIM worries that this will colour M’s experience. 2) SWIM can’t really handle the idea of a “sober sitter”. Certainly the only time she had one then the fact that the sitter was sober was a real issue. She worries that this is another thing which will have a negative impact on M’s experience. Would it be acceptable to be a “non-sober sitter”? She is not talking LSD (which would introduce all sorts of weirdness) but possibly a small amount of MDMA (as much to take away sitter-anxiety as anything else)? She has asked M and M says “whatever!” She would add that she has taken various substances with M before (MDMA, Cannabis, Valium, Ketamine) and M has been fine. 3) She has no doubts about M’s readiness for LSD, however she does have doubts about her own readiness to be in a “responsible adult” role 4) M is providing the acid. I will of course test the acid before M takes it. If it’s crap/not acid should she provide acid for her sister? If you have any feelings about the situation, either in response to the points above or just generally then I could do with some input. Any suggestions on articles/books also gratefully received.