If Rose was to die who, how, and why would anda want it to happen?

I think that Rose will go crazy and try to kill Elena. Just a detik before she does, Damon comes behind Rose and stakes her. He runs off looking sad, because he lost a good friend and Elena follows him and hugs him. && they have an intimate moment where Elena realises the humanity Damon has and she declares how much she cares about him. <3