I don't think rose can kill Dimitri but anything is posible

meee.. too

i think she will find the strength to.
she needs to let go of him and shes not really killing dimitri shes killing something that looks like him but is neither alive nor dead. she needs to prove to him that she has learned and exceeded what he had taught her. she needs to defeat him.
but thats what i think.. im bias though cause i think Adrian is the best guy in the book and he deserves a chance.

no she cant she can try and try but it'll hurt her in the process she can never bring herself to do it even if it'll be her last resort, like i said she can try...there's another option she can find a way to heal him...before he tries to kill her instead..