Here is an example of independent and strong person.

We wish her well and speedy recovery.

We wish she would let us share her life and experiences.

After all no one should be indispensable --really--.

Sharing roles (or functions) and responsibilities ensure continuity of the roles (or functions).

Nature does not bet on 'dependency on one working agent', Nature loves 'back-ups', 'rests' and 'alternatives' ;-)