Thank you for picking this up and translating it! It was cute.
Personally, I think the ending was fine. Yeah, there wasn't much, but when was there? This was cute and silly and looking to be short and sweet from the start, I think. I guess it could have ended on her agreeing to marry him but that would be super duper rushed. Instead it points to a greater focus on their living situation and future together; it's not much, but nice to see a touch of responsibility from him in a department that's not snake-related.
Wishing these two dorks well in their future together.