Warm My Stone Cold Heart

Y/n works for Ultron and is a stone cold killer. Nothing fazes her, she has no weaknesses, nothing to lose. That's how she likes it or has learnt to like. When the two precious twins join them she gets envyous. Hating both of the twins like annoying younger siblings, only difference being that there's not even a ounce of love for either of them in the heart of the cold blooded killer, only hate.

When they escape and Wanda thinks she destroyed Ultron, Y/n steps up.

How will this play out?
What did Y/n do?
Will she change her ways at all?