As I said in my post, my character breaks off the arrowshaft near the entry point, getting rid of the nock and fletching prt altogether, and then pulls the tip through the shoulder which is has already completely pierced. Yes, a modern expanding arrow would have remained stuck and done a lot more catastrophical damage, as would a modern broadhead have done too probably, but since it's nowhere specified that she's using those (and those would be pretty hard to get by unless she had them before the entire thing) I assumed the arrows were relatively simple broadheads.

Also, my character wasn't hit himself, so he has no trouble fixing it :P

BUT if you still want me to alter anything, please let me know.