Did you ever solve it? I'm having problems with it too
Sadly not and as it looks like nobody seems to care :/
I think you have to talk to her first
Sorry for paste spam, wanted to make sure everyone saw :)
Elyana can be invited to live with you when you find Orcin Camp, speak with the leader, and be invited to breed. (You don't need to breed)
You have to interact with 8 different Orcs as well.