Bathroom cabinet

[Give up]

Hi everyone
I hope someone can advise. I have today had my mirrored cabinet fitted above the bathroom sink. It’s 30 cm above the sink. Bumped my head on the edge trying to wash my face. It’s clearly too low. How high should a cabinet above a mirror be?

Thanks in advance .

 

[blup]

High enough for the lady of the house to see.

Blup

 

[Give up]

High enough for the lady of the house to see.

Blup

I have decided to replace it with the mirror because as lady of the house any higher and I won’t be able to see in the mirror