im so sorry willow has to go back in to get the plate removed. This happens sometimes for whatever reason, but at least this time the recovery will be a little bit easier. I know its expensive but it will be worth it in the end. I prya for a quick recovery for Willow.
the Chi i'm fostering right now has a small plate in her front left leg because it too was broken. Since her bone is so small we worry too about the plate causing problems in the future. I at least work for the surgeon so it will be easier for me to have it removed and whatnot but it does mean another month in the crate for the chi
good luck with the next surgery