A non-verbal communication style might not mean the complete absence of speech but that it is not, by any means, the default approach to conducting relationships and many people on the spctrum use actions and gesture, as well as writen communications, to convey most of what they really have to say to others. When it comes to kindly gestures, if there is a need and we can somehow fill it because we have the means or can find the missing puzzle piece, we simply bring those two things together because its obvious and we do this because we are innately well-meaning and without guile. The fact we treat it somewhat like putting a male plug with a female socket does not take the humanity out of it; as in, our logical approach does not negate the deep and often hard-for-us-to-express feelings that bottle-up deep inside when our efforts at communication go unnoticed, unwanted or "unheard". Loneliness, wounding and unfulfillment regarding friendships is a very big factor in autism, perhaps even more so for adult females on the spectrum and the wound can run very deep indeed, year on year, when our unique offerings to the world are treated as no more than the transactional deeds of neurotypicality when, really, we are speaking outloud and as eloquently as we can via them (or, at least, the best way we know how).
...for those of us who are especially sensitive, though the idea of being "out" amongst a load of other people in a room together is quite abhorrent as an idea, the reality is we could benefit from this more than most...because its the missing link to our health, we have to dare to go there to break the stalemate of our stuckness, and choir is an appropriate way in as it puts us where harmony is the very name of the game.