maou-chan's Favorite

hello im looking for manga that the mc have to live in differently body and era because the have accident such like
-from maid to mother
-what lies behind the end

and theres a manga that i forgot what name it is
its about a teenage girl who got accident idk i forgot and when she is awake she became a kid in somewhere kingdom, and because she already lived in modern day she help people to find coffee , and even help people to make a medicine for cold even tho she is a kid , i really want to read that again and manga or manhua some kind of that, if you guys know please help me thankyooo （/TДT)/