[Her first thought is really some sort of relief upon reading the letter, oddly enough. Rather, after all those years trying to get in contact with this place, it helps to know that there actually is a reason for everything. Of course, this leaves her questioning just why the radio silence for so long.
He first priority, of course, is to get a sense of where everyone is and who's still here. She's noticed right away that a few people are missing, and so she'll be pulling out her glider and airbending overhead. You'll likely spot her as she scopes out everything, noticing right away that things are different beyond just that feeling in the air. Feel free to flag her down - she might drop down on her own, anyway, just to check that you're okay.
Once she's gotten a sense of everything from the air, she'll be found in the forests - she's checking the barriers and to see if there are still monsters deeper in the forests. Some things changed, so maybe this did? It means she's running into some of the dragons, too. Being as attuned as she is, she finds herself drawing closer and closer towards the shrine, still tucked in there amid the trees.
Once she's there, she's studying her jar - a small, thoughtful frown at the konpeito she has there. She isn't sure what to make of both the good and the bad she has there.]