Live ball appeal - missed home plate

[KJUmp]

Originally Posted by HugoTafurst

I'm confusing myself.
I could use an answer for ASA, NFHS and NCAA fastpitch.

BR beats the throw to home (by several steps - in fact there is no tag attempt) but misses home plate.
F2 mis handles ball and goes to fence to retrieve it as BR (unaware that she missed plate) heads to her dugout.
F2 tosses ball to F1 in the circle area as defence fans start shouting "throw it home", she missed the plate", etc.
By now BR is in the crowd of congratulations at her dugout.
Ball reaches F2 who has foot on plate (it is clear to me that she is appealing the missed base) and (accidentally) tags BR before she can re-touch home plate.

Question, at what point (if any) can this live ball missed base appeal be accomplished by tagging the base only (and making the appeal known).

Is it actually entering dead ball territory?

Where is it described in each of the books?

Thanks

NCAA:
12.22 Missing a Base
12.22.2.1 If a runner misses home plate and the fielder misses or makes no attempt to tag the runner, the umpire should make a safe signal and declare "No tag." If an appeal play is made (that is by tagging either the runner or home plate), the umpire should then make a decision on the appeal.
7.1.2.1 Live Ball Appeal
A live-ball appeal is made by touching the base the runner missed or left before a fly ball was first touched or by tagging the runner who committed the violation, provided she is still on the playing field, and indicating to the umpire what is being appealed (if necessary).
2010 CCA Softball Umpires Manual:
6.1 Appeal Plays (Pg.68-70)
LIVE BALL or DEAD BALL-appeals that can be made during either a live ball or dead ball
> Missing a base
> Leaving a base on a caught fly ball before the ball is first touched
live ball appeals may be made by bringing the ball to the base missed or left too soon or by tagging the runner with the ball.....

Based on your sitch...under NCAA rules you have an out.