I just came back from a hiatus and I have no idea what is going on :'D I read she'd be near Vita lake and I haven't seen her. I hear she only shows for like 12 hrs and I've been refreshing and looking all day. My friend has had equal luck. Where did she goooo help me please?

She appears randomly on the main map for 12 hours at a time. She's not guaranteed to show up every day though, so you'll just have to keep checking. Or you can join the ping group in the thread linked below to be alerted when someone notices her on the map:

Merana ping group ()