Mimi (and everyone else not named Yamato, Sora, Ken, or Miyako) married a nameless faceless person.
Best part of Tri was reading the interviews and many of the staff admitting that they did things just to be shocking without a reason, they ran out of budget half way through, few of the staff that wrote it had watched the show, Kenji Wanatabe was forced to design a new Omegamon variant (and he was tired of that design already), they didnt have any staff that worked on any of the previous animes, and the fifth movie barely made a 3rd of the first
It's funny that they left the movie wide open for a sequel yet Kizuna didn't follow through any of the plot points left behind and rape!Gennai hasn't been caught.