Mrs. Daniel is a character who appears in Into the Unknown. In that chapter, she has Greg rake leaves in exchange for candy. She is also the owner of the Rock, which Gregory steals from her garden, and later returns in the end of Chapter 10.
She is an older woman with curly pinkish-purple hair. She wears a blue dress, a red visor, a pinkish-purple apron with a red flower on it, and brown galoshes.
She believes nothing in this world is free, and that if you want something out of life you've got to work to get it. She also doesn't like being called "old lady" and she seems to have a liking for Greg.