For some counties, there are online portals and you can just type in her name and see if there is a divorce record. Those are helpful if and only if one of those counties had jurisdiction. For example: https://proportal.cambriacountypa.gov/civil.publicsearch/(S(kf3ef14n3ok0y1ysvdrebq2m))/Default.aspx.

I would touch base with the prothonotary for the counties, though. They should be able to help. https://www.pacourts.us/courts/courts-of-common-pleas/prothonotaries