Those are the initials of the name she uses, Mi.... H....... I never share their names because too many people are just too idle to look for them (Especially Yanks) and if I ask for a name I never get a response!
Okay, we know what Haruka (her character name) is supposed to be saying but it would have been better if we could have seen the bottom lime of the English translation. No way does she say, 'Today is another hard day of masochist husband.' So pleased I've got the 3hr 23min version from another platform. I could tell you her name but suffice to say her initials are M H.