FicWad

"She tucked him in and went off to change out of her 'work clothes' and in to a simple night gown. She lies down next to him and quickly fell asleep." You're mixing up your verb tenses here, between "lies" and "fell". Suggest: "She settled in next to him and quickly fell asleep."

"Harry picked up on things quickly and was taught things both magic and non-magic." The end of this sentence is awkward. Suggest: "Harry picked up on things quickly and was taught things both magical and mundane." Otherwise, I think you have something not seen in Harry Potter fanfiction in a long, long time: an original idea. One more suggestion, you should show us two or three days in Harry's life with the Ladies of London before dropping us in the story and shipping him off to Hogwarts. It will help the reader connect more with the Harry who lives in this story, and give us more of an idea as to what to expect from him.