she hit the roof

[Hit the roof] is used to say someone has suddenly become very angry or to rise exponentially:

Vegetable prices hit the roof as incessant rains destroy crops   
 
Hyderabad: Heavy rains that battered Telangana consistently for the last two weeks has damaged vegetable crops in several districts and resulted in sharp increase in the prices of tomatoes, lady finger, brinjal, carrot, beans etc.  
 
[The Times of India 25.08.20 | LINK]

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