I would like to monitor my daughters iphone?

I want to monitor my daughters texts on her iphone however I do not have access to her phone. If I did happen to get access, it wouldn't be long enough to jailbreak and add software plus I don'twant to jailbreak her phone. Is there ANY legitimate spy software that I can use to track her phone remotely? I also have an iphone that is already jailbroken. Please help! I've been looking for something for days on the internet and even got ripped off once and don't want to do it again.