My guesses would be ??? she???s a busy women who doesn???t really have time to worry or care about what small items (pens etc) she has gathered, especially as you say with the larger bag she doesn???t use as often; she maybe hasn???t found the time to clear these items away; coins gather easily in bags/purses, especially when you are running around town e.g. in and out of shops, or on and off publ