I've had this strip for a number of years now, but I will post my translation in honor of Valentine's Day! :)
Murrue's Situation
First Box:
Murrue: Aaah! It's a failure!
Second Box:
Mwu: Wahahaha! The pastry chef who makes the impossible possible has arrived!!
Murrue: M-mwu!
Third Box:
Mwu: Look! This handling makes it magnificent!!
Fourth Box:
Mwu: Ta da!! It's finished!!
Murrue: It's for you.