Sapphic art usually depicts women women in love―sometimes erotic, sometimes not―it's a term that's not as used as openly as lesbian is. It usually describes works of art, more than women in a relationship themselves.

[The way she speaks has an air of confidence, there is nothing awkward or shy about it. Gabrielle idly wonders what their equivalent of sapphic would be. She's just as interested in learning about them as much as they are interested in learning about humankind.]

That's why I suggested that the Queen may have found herself a little too into something like that, hence why there's only females here.