Can you see this as exploring holding on to good thoughts and feelings?
What has now come up for you around this is important to talk about with her.
What is it that drives the desire to call even when you 'know' she is there--is something to think about and explore. What are you experiencing right before you reach for the phone, what happens to the reassurance, once received--something to notice and think about and explore.

A zillion is a lot. Can you call 1 less than a zillion..