Set Library Radio to only put music from specific folders



Have been using Plexamp a lot recently. Also using library radio with Alexa with no issues. Today I added a separate folder of music for one of my family members (~50 GB) so they could have access to all of their music through my server. Is there a way to exclude their folder from my Library radio? Now when i have it play library radio about 50% of the time it plays music from their folder.

I have plexamp set to the correct source for my music but it still pulls from both folders for Library radio? Am I missing something here or is there another way to set this up while still allowing them to have access to their music?