@ramengirl was always voting on her own post during the last day.
This was to attract more votes with a reasonably low reward while still self-rewarding at full strength around the end.
This is not how SP is intended to be used, it's intended to be used to give exposure to your post and let the market be the judge of the outcome.
BTW: I'm really not a fan of "superficial Japanese feel good selfies" posts.
+1