Mrs. Flitcroft was the woman who took in the 12-year-old Ehrich Weiss during his runaway days and looked after him. Houdini never forgot her kindness and looked after HER for the rest of her life. The below pic from Houdini His Life Story (which may or may not be 1908). In it we see she's wearing a mink stoll Houdini bought for her.
According to a 1994 Mystifier, Mrs. Flitcroft's house was still standing (at that time). A Google search does turn up what appears to be an old house at this address. But is it old enough to be the original? Wouldn't that be wild.
Here's to all the caring Mrs. Flitcrofts out there!