How to undisable IPhone 5c?

Ok so, my friend asked me to try to undisable her iPhone 5c, since i did it with my old iPod Touch 4 2 Years ago( I'm a freshman in high school), whenever I go into iTunes it tells me allow access from the phone but it's disabled, so I looked it up, yet I can't restart it for some reason, I tried powering off and on again but that doesn't work, any advice?

I can't live like this?

I'm a 16 year old girl living in a bubble. My parents are extremely strict and need some advice on what to do. Never have I been allowed to attend a sleep over, rarely was I allowed to leave my house thus my friends abandoned me. I'm not a problematic kid, I get amazing grades, I'm supposed to be graduating as a junior. As a result my parents have refused to sign my early graduation papers if I don't agree to going to the local community college instead of osu. I have my drivers license but aren't allowed farther than 5 miles from home or else I would be in serious trouble (parents use find my iPhone to locate me). I gave up entirely on friends, sports and activities. I felt to jealous of the other kids and deleted my social media. What should I do I feel like I'm suffocating.

Finding a stolen iPhone 7 plus?

Let's say it has iCloud and find my iPhone, if the theft turns it off immediately will the iPhone be able to be tracked or will it just show the last location of the iPhone?