I'm nearly half deaf on my right ear since I'm 14, though i can still manage to hear around 50-60% with that ear... so i know exactly what she's talkin' about when mentioning the balance problem... i've got sometimes extreme problems with this too...
I'm so sad about these news!
I understand all the posts about she should take a rest and i feel the same way!
...but i can understand ayu as well...
She knows her time is limited - so she would like to enjoy as many moments as she can get...