Welcome to YT - and yes, we *do* love our little terrors - errr, terriers

. They are very unique. In my household, there is an 11 year old American Staffordshire - commonly called a pitbull. And he is extremely patient with the antics of (first) puppies and (now) small demons

.
Good luck with the mange; once you have it under control, life will be good again.
As far as the accidents ... my house has a doggy door. When we're home, they can come and go as they please. But when we have to leave, we lock the door and they're stuck inside. I have a piddle pad by the door (and another in our bedroom where they sleep at night) for those times when they just can't seem to hold it. They don't potty on the floor anymore now that they have an "acceptable" place to go when they can't hold it any longer. Maybe that would help?
Florence was my mother-in-law's name, an old Latin name meaning "flowers". Your little girl may not smell like one now, but just you wait


Congrats on your new baby; love her long and well.