There were two paths laid out before River. Agree to Me's promise and find out what she was up to and then do as she will with the information, or, two. Take the long way around figuring out just what Me was up to.

It really depended on just how much of a headache she wanted later in regards to her wayward husband's past selves.

"Chances are whatever you're trying to do will fail without someone that knows how to handle them. So, the real question is, how much do you want my help."