You can place museum rewards in to the left of Pam's house door and again in the middle of the path near the bus station to get her there faster than 10am.
Just watch out:
Later Game Spoilers
Make sure to grab the item by her house before doing the community project to upgrade it from mobile to permanent, as it gets destroyed otherwise
This works on any villager getting blocked in their normal pathing, I just found it helped me when doing skull cave dives in the early game.