Dear friend, welcome and thanks for entrusting your query here at HCM!
I am Dr. Prasad Akole (Critical Care Expert- http://bit.ly/Dr-Prasad-Akole) and am glad to address to your query here.
Did she have sickle cell anaemia
It is chronic kidney disease
and anaemia is part of it (if sickle was not there earlier).
If sickling was pre-existing, it could cause progressive renal failure
You should be carefully guided by your nephrologist
You should not neglect as treatment can result in improved living.
I hope you are fully satisfied with the guidance I gave.
I would be glad to answer any further queries. May I request you to rate your experience here before you close.
Thank you and Good luck!