Hi, this is the kind of pad holder I use..
Amazon.com: Iris 301551 Floor Protection Tray -...
The barking sounds like anxiety from you leaving, she knows you will be gone for a while. I saw an episode like this on the dog whisperer, perhaps look up some of his shows and see if you come across the one with dog anxiety. Do you have a relative or friend that can come entertain the dog for 20 minutes? or let her out to tinkle? Wishing you better days with your furbaby.