healing battle afflictions of leaders

[Morbius]

hi everybody this is my first post here.

ive bought dominions II recently, and ive got a question concerning battle afflictions.

a leader has joined my cause. she was blinded before she joined me.

another hero that is in my service has the ability to heal battle afflictions.

having both heroes at the same province didnt help, though. (i want the blindness removed)

the healer was 'defending' and the blind witch was 'researching'. same province. didnt work.

thx in advance for any help