Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Find My iPhone doesn't notify the other device users that you're checking on a location unless you direct it to send an email when a missing device's location is found (if a device doesn't appear, due to bad signal, subway, etc.) You may passively track the location of all devices listed with Find My iPhone under the same Apple ID.

This comes in handy when you have several family members owning several devices each. If something is misplaced, lost or stolen, you have all of the device locations listed in one viewing app. Then you can lock, wipe, etc. as needed for security.

FMF is a better way to do this. Doesn't get into the whole email and iCloud thing. Of course the parent, IMO, should know the apple and iCloud id.
 
If a device is showing as Offline on the Find My iPhone list (due to the situations I mentioned or because the device has been turned OFF), when you touch that device's listing, an option is shown to Play Sound, Lock, Erase and to Notify When Found. The last option generates an email to the Apple ID used in FMiP. The option for email doesn't appear unless the device is Offline. You must have chosen that option when you couldn't locate your daughter's iPhone. It only sends an email when the device is once again located by FMiP.

For security, I'd use the Apple ID that you have for your iPhone on Find My iPhone on hers, too (for Find My iPhone.) Then do as suggested by an earlier post and turn Restrictions ON on her iPhone and don't allow her to make any changes to Settings. She's your kid, you likely paid for the iPhone and the service and you have a right to know that your valuables (child and device) are located where you expect them to be. Children's phone use is a privilege, not a right, no matter how old they are (underage.)

Find My iPhone doesn't notify the other device users that you're checking on a location unless you direct it to send an email when a missing device's location is found (if a device doesn't appear, due to bad signal, subway, etc.) You may passively track the location of all devices listed with Find My iPhone under the same Apple ID.

This comes in handy when you have several family members owning several devices each. If something is misplaced, lost or stolen, you have all of the device locations listed in one viewing app. Then you can lock, wipe, etc. as needed for security.


Find My iPhone does indeed send an email.

When I sign into my sisiters icloud account online and then go to then Find My iPhone feature, to track her phone, whether it is online (so it appears on the map) or offline (Find My iPhone states that the phone is offline - and NO other options have been selected by me, i.e. I have NOT selected to track when the phone becomes available or ANY email options), she will always receive an email to say that someone has signed into her account so she knows someone has being doing something with her account.
 
My circumstances are different in that I'm already signed into the Find My iPhone account by virtue of using my Apple ID for all of the listed devices in FMiP. I suppose that would explain the lack of email. I also don't use an iCloud email account.

Please read my previous comments with these facts in mind, and apparently, YMMV.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.