I always hate the trope where someone realizes the person they love is better off without them, so they just cut off all communication like that. Talk with them. Be honest. In a couple chapters the short haired friend is probably going to get all jealous, and it's going to be all her fault. Good intentions, but dumb move.
I kind if want her to become a known "good lay" amongst the sex workers. Like they pass gossip about the cute naive girl fucking her way through the brothel's entire roster and wonder who she's going to pick next.
That would be a great plot point. Especially if Mai were to take her to a company picnic or something after the fact.