Cobra, She's basically saying she soaks the bed, and that it is a really scary feeling feeling that out of control.
Corri, I'm pretty sure what you are talking about is the "panicky feeling" MrsGGB gets when she's working up to a good 'O' and calls it quits. A couple of times she's gone far enough to let go a bit like you are talking about...and I mean like serious puddle on the bed, Woman is mortified type thing. this is exactly what I've been working with MrsGGB on trying to get through the panicky feelings and embarrassment. Nothin' to be embarrassed about.
For us guys, it is more like an achievement...a 'wow, look how much I turned her on'. Nothing to be embarrassed about at all, honestly. There's probably many guys out there who'd kill to be able to make their woman do what you are describing.
So cool, good to hear you are getting some good Fcuking!