I’m not sure, possibly somewhere between 1 and 2.

Isabelle likes her lovers with a penis and boobie-free; but she’s not violently against homosexual encounters. She doesn’t mind if she’s asked to have sex with a woman (she’s occasionally asked to do so, yes) but unless there is some major charm going on, I don’t think she ever went ‘I will have you right here on this carpet.’ on some random woman’s ass.

She tends to say that to Maion more often than she plans to, though.