Wow, A's and C's - as per OP is quite a difference
As long as it is the same person. I can understand perception fluctuations between As and Bs, or Bs and Cs, but As and Ds is a big gap (no pun intended). Pics in the ad are definitely not As, however, it may be the case that the pics are not her. Or you guys just saw 2 different girls at the same place, which is not uncommon, but yet not cool for us mongers. Normally roommates (if they are indies) would have 2 separate ads and 2 separate phone numbers. Or...just a fake pic.