She is facing Hyperacusis.
Hyperacusis is a type of reduced tolerance to sound.
People with hyperacusis often find ordinary noises too loud, while loud noises can cause discomfort and pain.
The most common known causes of hyperacusis are exposure to loud noise, and ageing.
Next Steps
There is usually no cure for hyperacusis, although it can be managed.
Treatment focuses on insight, reassurance and protection of the ear like using ear plug to mask the loud sound.