Since she doesn't have the same issues as the Lunvalgan females do, she could probably match with a lot of them actually. They just have trouble reproducing because of what the disease on their home planet did them. I could also see them discovering that humans and aliens are compatible enough to interbreed and just being stunned by that news, since they're two different species and didn't expect that they could do better than surrogacy.

Then there will come the ethically questionable problem of what to do with that information, since they need humans to save their species from extinction but would be put-off by the thought of forcing them to sleep with their own people.

This is so 20th century dystopian, haha.