[Wanda watches Loki's expression and while she doesn't understand, she realizes that he might need time to process what she's told him. If he truly wished to rule and Thor didn't... he might take it as a personal slight but she knows that isn't the case. Perhaps Thor just finally realized that he isn't a ruler at heart and his people deserves someone better.

All she can do is guess and Wanda isn't comfortable guessing.]

The snap is when Thanos made half of the universes population disappear. It was reversed and Thanos was killed but not until years later.