so i bought my sister an iMac for christmas, anyway ill get to the problem I'm having. I'm trying to set up her FaceTime account, She already has an Apple ID but when she signs in and i call her on FaceTime from my MBP her iPhone only picks up the call for FaceTime, not her iMac. Her apple ID is already in my contact info along with her phone number, just trying to figure out how to FaceTime through our macs. Is there something I'm missing or am i retarded lol