I would get a collaborator in the audience, or 2-3 more chicks (bands girlfriends) imposters as a regular crowd and tell that lady "But those 2 came up before and said it was too low, now whom of you should I follow? I think it's better for you to go talk to them, because if I turn down they will come back, and if I turn up you will come back... so which one should I follow?"
They usually split after faced with that choice.
They usually split after faced with that choice.

we're also playing jazz with phenomenal soloists = talent trumps most other issues (so far!).