My husband is being asked to work in Japan for a year and was given the option to bring the family along. However, my girl has just settled in her new school and I am currently working also and in a dilemma if we should follow him there. What would you advice me if you are in such situation?

if you are sure it is only for a year then i think the best way to handle this is for him to go while you and your daughter live here. going for a year and coming back again would disrupt her routine. your husband can stay in touch via video calls and also come over every few months. in case after a year it feels the opportunity may take longer and he has to stay there for more years, you can take a call then.