My prediction is that she will be at the restaurant evading paparazzi. The reason why she hasn't contacted him yet is that she forgot her phone charger at her work and it's one of those celebrity models with a novelty charge port, probably shaped like a heart or a crescent moon. And she sucks at remembering phone-numbers, line accounts and physical addresses. She could easily navigate to his house but can't due to the aforementioned paparazzi. And she sucks at navigating maps so she can't explain to someone else how to get there. And while she has been there sulking/worrying/regretting about not contacting him, she hasn't yet described him enough to the chef/owner for him to put 1 and 1 together and link his employee and her fiancee.