The Action for the Helpless fall for all characters is 10. If you want it to go to the helpless state after a set period of time, add a variable to her Parasol Float SubAction, then in the action where she does that, have a change action event that allows her to go into the helpless state when that variable is reached. Also, if you want her to not be able to pull up her umbrella during the helpless state, I find that the parasol is involved in doing that, so you'd want to remove the parasol article which is Article 0.
I have a tutorial on
how to make Special Attacks if it can help...
As for the Turnip thing, That is controlled by Article Floating Points. You can alter them by using the
Article Floating Point Editor.
I have the Article Floating Point Editor already actually, and I tried looking at it, but all I could find was odds for the item-based "turnips" (Beam Sword, Mr. Saturn, Bob-Omb, et cetera.)