Well Pyrrha's VA Jen said she will going to get another role in RWBY above Lisa of course, so who knows, maybe they pull the good ol' "Cousin/twin sister that looks exactly like the dead protagonist" trope out.

With my luck, it'll be her older/younger sister. Who then gets the hots for me as well. Or even worse, it might be Pyrrha's single/widowed MOTHER who will want me.