I think meanings of words just change. Liberal 100 years ago is different from a liberal today, so usually when we say liberal, we probably mean neoliberal. Is it academically correct? No, but it’s an internet forum, we don’t need to use as precise language as possible.
But don’t take my word for it. I could be completely wrong and there might be another reason.
Just sign in with her account on your pc, invite her and then you can sign out. I had the same problem.