Probably trolling from kirks side.
At the story though, her lifestyle is certainly a choice. My question to her would be what she is actually attracted to, is she attracted to both sexes but maybe just choose to have periods where she's "gay" and "straight". She can't say it's a choice that she suddenly felt "hmm, I'm not attracted to men anymore, I'm going to be attracted to women". That doesn't work. She has got to be bisexual or something.