Amazing news! Based on the NamUs description, it should be easy to compare her to Valencia Jane Doe as Pem has a crooked front tooth. Of course, DNA is the preferable route.
It also says Pem has a cleft chin. I didn't initially notice it, but Valencia Jane Doe's reconstruction seems to depict a vague cleft chin too. I may just be seeing things, and I'm not sure if you can tell that from a skull.
I noticed some inconsistencies in the NamUs profile though. In the description it says 1973, the date says 1979, the thread title says 1977, but I've also seen 1978. What year was Pem last seen?