Snatch the princess

Hello:
Long time since I've been here:
Do you know if this expression has any idiomatic meaning: "snatch the princess".
The context: Someone offers a couple help without charging them, and the husband says "she won't take our money, she won't steal our souls and she won't snatch the princess".
My very thanks to you all
Miri

I've never heard "snatch the princess." I was thinking it might be a fairy tale reference. But, then again, could it be a reference to a computer game? I'm not up on that and my kids are still asleep. Does anyone know?

Mysterious to me, too. More context?