I have seen videos where she just LETS Tessie destroy furniture. I mean actually destroy it. Ripping the bottoms out of the couches, stacking them precariously to climb on. Tessie broke that massive 3-tier bunk bed in record time. It's their house. If they're okay with is being demolished/drawn on then good for them that they can replace things so easily, but it's just reinforcing behaviors that could and should be limited, autism or no.
She has a weird compulsion with buying things, I've noticed. CONSTANTLY purchasing junky items that no one really needs and no one ever takes care of.