Nicole, I meant to respond to your question about the ankles. I have not worn them around the house yet to test them out, but I think I see what you're talking about -- I am pretty sure it's just a result of the way my foot slides forward just a bit, the way any foot does in a heeled shoe. As you can see, there's extra room in the back.
I think it will be OK, because I didn't feel any rubbing or pressure in these, the way I felt at the toe opening in the size 8 (these are an 8.5). In fact, these have a bit of extra room all around. The spot where the top of the bootie hits my leg, however, is something to pay attention to as I test these out, so thanks for pointing it out.