Mea Culpa ..... I should have checked the profile. Obviously the OP, as a single female, will have no difficulty gaining entrance to clubs. I still, however, suspect that the networking skills of her sister are better than those on the forum when it comes to finding other females to go with her. At least I do not know if Borus or Alper have a list of available young women to escort tourists, and as competent as Enigma is, I am quite sure he cannot meet this need either.
So.......can Olesya feel comfortable going to Sortie alone? The mother and grandmother in me is screaming "No", but my daughters and grand-daughter have certainly gone alone to night clubs over my objection and survived the experience.
Enigma, Borus, Alper, GTTD and VR you need to give Olesya some advice about whether going to Sortie alone will create any problems for her. I am too many decades removed from this issue to provide any worthwhile advice.