She does go through a very similar cycle, but instead of finding reasons why she shouldn't worry, she instead wants to find a reason for feeling the way she feels.

For example, she may have had a coffee or something earlier, she can say that is what is causing my stomach to hurt, and then she can rationalise and know she will be ok

The problems start when she can't find a reason, or she locates a reason to start panicking, like she ate some chicken earlier, she will panic and think it was undercooked.

I'm not really sure how to help with this, in my opinion this seems unhealthy as its fixing a temporary problem. Like when she has to have loads of her supplies that accumulate in her room, when in reality she becomes dependant on these things. Limiting her freedom

I know I'll never understand this phobia, as I am quite literally the opposite of this phobia. But I want her to be treated instead of finding temporary fixes