It's interesting to me that the answers showing "correct" answers from current models still don't strike me as correct. The question is unanswerable, but not only because we don't know how many balls and bats she stole. We don't know that she had any intention of maxing out what she could buy with that much money. We have no idea how long she has been alive and accumulating bats and balls at various prices that don't match the current prices with money she no longer has. We have no idea how many balls and bats her parents gave her 30 years ago that she still has stuffed in a box in her attic somewhere.

Even the simplest possible version of this question, assuming she started with nothing, spent as much money as she was able to, and stole nothing, doesn't have an answer, because she could have bought anything from all bats and no balls to all balls and no bats and anything in between. We could enumerate all possible answers but we can't know which she actually did.