Ann(e) strikes me as the kind of person who would break out into hives and do a nervous giggle if lily's name was mentioned amongst friends. Although I think she ditched lily, I think she gradually stopped replying to messages and kept making excuses for not meeting up rather than saying I no longer want to be friends due to xyz . She's conflict avoidant which is why Mark is allowed to get away with his big bollock behaviour and think everything he says or does is greatTbh, I think it shows a marginally more mature attitude, and that she can mention Anne without it being a big deal. Confirms to me that Anne did the dumping.