I don't think she gets better or improves her stock either, but she's so close with Georgia and really having a chance to cement her legacy as the best player in VT history, plus a bit of NIL money and a free year of a Masters degree, makes it worth it. WNBA for a player like that might only be a year or two, who knows. Europe will likely be there regardless.
Her autistic sister was also very close with the team and coaching staff and I'm sure that might have been a factor. Raven commented "hardest secret I've ever kept" on Liz's post, so it sounds like this decision had been made at least in the Kitley family for some time.
VT needs King to come back and one or two impact transfer portal players (or emergency of a player like Charlise Dunn or Carleigh Wenzel, or someone from their talented freshman class), but it's not impossible to see them as a F4 contender.