As a child in the 1980s, I remember reading a chapter book (or a series of chapter books) about a older woman who had magical powers and befriended neighborhood children. I recall that the woman could cast spells and that the spells were used to teach the children lessons. One spell I recall is that if a child said a curse word, a black cloud would follow them around for days. I also recall that the woman had an old book with rose petals dried between the pages.
I recall the book fondly and would like to read it to my children.