Umm I don't know...I have the feeling she just lost interest in fashion and just wanted to do something to be remembered and being at center of attention during fashion week and have her celebration moment, she definitely lost her mojo since she started dating that Angelo guy: her style went downhill, she rarely buys pieces anymore and just borrows stuff from her editorial styling closet, her stories are ultra lame and boring and she relegates most of her work to her endless number of assistants (she got like 5, even Anna Wintour got fewer resources), she skips couture all the time to go on vacation (c'mon it's just 3 days in Paris, 1 hour flight from her house in Milan), even this season she almost skipped whole Paris week and just showed up @ Givenchy on Sunday.
I don't know if you guys noticed but the whole accessory section of her auction sucked (no CHANEL or Hermes bags, lame shoes from B-list designers), which makes me assume that the clothes she auctioned were not even directly bought but more likely being gifted or purchased with huge discount...