I have heard good things about this one, and it does not require jailbreaking your phone.
http://www.teensafe.com
http://firsttoknow.com/how-to-spy-on-your-kids-iphone-text-messages/
I have been trying to do the same thing, except that I wish to monitor MYSELF, in order to answer the question "where did my time go today?."
I have found some interesting ideas with an app called IFFT (If this then that). You can, for example, have your phone text your husband (or text Evernote with the time that you left) whenever you leave for the day. I haven't tried it yet, but how about having it send you a copy of all of your daughter's texts? Or you could do something similar with Facebook postings.
I know that Verizon Familybase does some of this monitoring stuff too. Hang in there, the new iOS release for the app "Rescuetime" has lots of potential, if it is half as effective as their web app.
Cheers!