Elmira deleted herself from the game?

Just ran into a bug on the Nintendo Switch version of the cozy bundle, where once I've completed the requirements for the "Needy Elmira" quest, once I go back outside she isn't there anymore, and when I tried to enter the castle the game crashed. I reloaded the game, tried to complete the quest again (Elmira still disappeared) but instead of entering the castle I went to the uncharted island to start that part of the story and headed back to capital island again. I can successfully enter the castle as normal again, and when it turned nighttime Elmira was in her house. Not sure why the game crashed the first time or why Elmira disappeared, but thought it was worth reporting.