Incall system data appeared on my iPad.. after reading hear there was a mention of jailbroken… if it was tampered by someone can you fix jailbroken?

I was using the search apps thing and I saw it pop up from an ex girlfriend that has hacked my phone. The icon next to it showed that it wasn’t something friendly or on my phone and it’s not something normal. After investigating and reading about other instances with it showing up someone mentioned that it could have to do with something being jailbroken.? So if that’s the case how do I get it off there I couldn’t select it and I couldn’t make It disappear. At one point in time she was doing something funny with FaceTime. So it makes sense if it was however how do I figure these things out is a big question for me I just want the device to be OK. I did turn off iMessage and FaceTime for the pad though so I don’t know if that has anything to do with it but I didn’t delete the apps