OP..
To me, she is a gay woman who is married to a man. You said that she said that she is attracted to the “masculine types”. She didn’t say that she is attracted to masculine men only.
She is still attracted to women, just the masculine type women. According to you, she refuses to acknowledge her being bisexual because she is currently married to a man.
Well, she can refuse to acknowledge whatever she wants, but she can’t deny being attracted to both men and women.
Bottomline, although I personally believe that bisexuality is bs, the fact remains that she isn’t heterosexual. She is a member of the LGBT+ community who is currently in a heterosexual marriage, whether she acknowledges it or not..