"Although" is a detour road sign, indicating that the sentence will change direction. So, although the woman lived through the Great Depression, she can now give her grandchildren the things she couldn't afford growing up. Choice (F) flintily is wrong, as this implies she was not kindly disposed to spending money. This reasoning also eliminates choices (B) scrupulously and (D) meticulously, as these imply a restraint with money. Choice (C) capriciously is plausible, but implies a carelessness that is not evidenced in the passage. Therefore, choice (A) liberally and choice (E) lavishly are the best choices, as they indicate exuberant spending, opposite of the frugality typical of the Depression.