Photos of two models together

Very specific but very important issue for me. Whenever I try to take photos of two of my models together (a male and a female) the results show one of the models (the male) looking exactly like he should but the female model looking hardly anything like she should. And it’s always the same with these two models together.

Significantly, when I take a photo of just the female model by herself, the photos usually come out just fine. But when I take a picture of her with the male model, no matter how I describe her and ever when I select “Strong” in remix mode, it’s as though the program puts all of its energy into creating an accurate representation of the male model and totally forgets to do the same for the female model. It’s beyond important that I be able to take accurate photos of these two models together, I have no idea what’s causing this but I need it fixed right away. I can’t even tell you how many useless photos I’ve had generated because of this problem