This will prevent Hilde from sending you messages, friend request or from viewing your profile. They will not be notified. Comments on discussion boards from them will be hidden by default.
“People very often say to me, 'How did you do it, how did you raise a baby and write a book?' And the answer is - I didn't do housework for four years. I am not Superwoman. And um, living in squalor, that was the answer.”
―
J.K. Rowling