Oh boy.. We've had similar issues with Treo. We've talked about taking her back/rehoming her several times. Its so frustrating. She's so good.. and then she DESTROYS something.. ugh. 2 78" faux wood blinds, couch, shoes, 2 crates (metal and plastic), 2 muzzles, molding around a door, oh yea.. and she used to pee too!

When she'd pee, I'd scream at her to startle her and then rush her outside. Maybe they need to just take her in and out quickly.. in addition to the walks. Maybe she doesnt know when to go? Some dogs are on a mission while on walks.. like our Bunny. Maybe just a quick in and out and a treat/praise if she goes.