chee_52answered grow question 4y ago I've used duct tape in the past to help cover and secure wounds like this, but it may also be helpful to loosen the wire on that side a bit before applying anything (if there's still a little give or movement in the stem).
Just a side question: do you have any wire with a softer rubber or foam coating? It looks like the wire you're using might start cutting into the stem's surface if the tension is too high.
Good luck! I think she'll make a strong recovery!