To those of you who are in support of continued validation: not all children respond positively to this. I'm completely in favor of validation, but some kids just get stuck, and need help or time to move on. If I were to validate dd1's feelings until she decided she was ready to move on it could take (literally) hours. By contrast genuinely validating and empathizing for a while, and then moving on works much much better.
OTOH, DD2 seems less likely to get stuck.