She was a killer who aspired to become the “Destroyer of Worlds” and sliced off Yo-Yo’s arms, and she was altogether too much of a wild card to roam free in S.H.I.E.L.D. Yo-Yo got her revenge by slitting Ruby’s throat with Ruby’s own circular scythe-like weapon, but it wasn’t until after Ruby exposed herself to a whole bunch of gravitonium and manifested superpowers.
While her powers didn’t prevent her from dying, her death did seem to unleash a wave of gravitonium energy on all the people and land around her.
On the one hand, few characters (and probably not the vast majority of viewers) are going to be wrecked at the reality that Ruby was killed by Yo-Yo in the latest episode.