sign the papers,
she still has to bring them in.

Currently this is all her choice,
all of this was done by the power of her decision.

Sign them, tell her you won't live in limbo anymore,
you won't tolerate cheating, affairs, broken promises, lies, deception. If she wants to be married, she will work on the marriage with you, 100% wholeheartedly otherwise she is just wasting her time and more importantly your time.