Our two-year old monkeypuzzle tree became the target of two male deer competing for territory. It is badly damaged: the trunk is deeply scratched and torn for a length of 6" and 1/3rd circumference. One branch was ripped off and two other are hanging by their outer skin, i.e., a thread. How do we deal with repairs and protecting it from infection? We want to keep it alive if possible despite its appearance. Thank you.