Found it. Albino & Witch was the name it was by Tendou Itsuki

Wasn't it but it was cute thank you for the read. If I remember correctly the little girl is dying but the witch saves her. The little girl is fed food she is sure poison but recovers after a few days. The food turns her hair white. It ends with the little girl with a one sided love.

Looking for a short manga I saw on here a while back. It was about a witch taking in a young girl and nursing her back to health but with dubious food. It was mostly one-sided of I'm remembering correctly. It was short might be less than 10 pages of that helps.