I really liked that game ! And for a first ever game, it's impressive. The vibe reminds me a bit of Paradise Killer.
Love the principle ! The only comments I would make are that the sentences repeat themselves a lot, the send button is hidden by the letter sprite and difficult to click on, and it's a bit sad we can't go back to the character if we click on the last arrow after her dialogue.
Great job ! And the esthetism is really amazing.