@VikkiHDF would have to answer of course…but I would think if she can’t get a sales tax number for PA, she can actually ‘SELL’ to you. As in you couldn’t check out on the site??
Might be a thing where you have to send $$ to another buyer with similar sales tax and then maybe have them make the order, pay and then she might ship directly to you(?). I’m just spitballing’ here. Vikki will have to give you the definitive answer. Good luck.