My friend and I both have iPhones and have iMessage enabled. However, the apple account setup on her phone belongs to her dad. If I were to text her, would my messages go to her dad as well? I see there's an option in messages setttings "Receive at" and into "Caller ID" you can have just your phone number checked. If she did that, would that prevent my messages going to both if I were texting her number directly?