I don't think Carmella is completely useless, but she's a clear step below the level Sasha normally works with. I have a bad feeling the only options will be Sasha trying to work at her level and having a ho-hum match, or Sasha deciding she needs to push her usual risk taking to new heights to make up for it.
I suppose Sasha could always surprise me and have a "Ric Flair carrying the broomstick" performance, hopefully that's what we end up with.