Sure, Tara wasn't doing anything. Well, anything apart from sleeping (which, to be true, is something pretty great). If she didn't need to sleep to live, Tara would probably never choose to sleep -- there was too much excitement happening all the time.
When her phone, at full volume, suddenly went off Tara shot awake immediately. She was of the generation to keep her cell phone right beside her at all times -- FOMO or whatever -- and though she didn't get too many late night calls, she (once again) never wanted to miss any excitement.
Spying the number, she grinned, propped herself up on her headboard and answered with a happy-sounding "Hello!" It hadn't even crossed her mind that it might be some kind of emergency.