Once again a question of several conditions and how events work. Remember, events sheet is read from top to bottom.
Event 11 and 12 will modify your animation if the event is true. If you are moving your character when taking a fatal blow, the platform behavior will carry the momentum on the next tick, so "On platform moved" will be a true condition.
To those events (11 and 12) add the "Is Alive" condition check as well.
Also, on oversight took place in the event 48 make the condition "Health <= 0" not simply "= 0".
And this should work as intended.