I do not think she is confused as much as she is scared... of the future. She wants you, and loves you, that is pretty clear. But it is tough to a) acknowledge you've acted rashly and given up in a R when the R had still a good chance b) put yourself back in that R.
Put yourself in her place: what if the new Bob disappears the moment she marries him again?
You are doing great in showing her (not telling her) that the new is there to stay. She is relaxing more and more... Not as fast as you'd want, but light speed for all of us here.
So congrats, and keep DBing. It is clearly working!
"You don't throw a whole life away just 'cause it's banged up a little"
Tom Smith in "Seabiscuit"