My mother is a hoarder. The last time I helped her move it took 3 of U-Haul's largest trucks to transport everything. She actually keeps her home fairly clean but boxes slowly build up over time then she deposits them into a storage unit. By my calculations she's spent about $20K over the last 6 years just to pay for the storage unit. This is also in conjunction with a shopping addiction. She has no money saved up and frequently tells me she can't buy groceries despite constantly shopping online and paying the storage unit fee.
She is going to have to move again soon and I am not going to be the only one to have to transport all that crap, possibly to another state. So my plan is that I'm going to sell all of it.
So I have decided that I'm going to start selling her stuff. I have access to the storage unit and I have told her what I intend to do, she is reluctant but almost sound like she's be relieved if I do.
So my question is; how do you deal with someone that has a bad shopping/hoarding addiction and what method should I use to sell her hoard? Not sure if I should do it online or maybe have a yard sale.