I don't know why Tsunku doesn't make a subgroup with Mari, Kaori (who's solo records didn't do that great) and Kei (who's doing nothing). Possibly throw in Ayaka as well. Call it Pucchi Tanpopo. It's be a winner!
I've noticed she tends to look really pissed/irritated when doing most HP things.It amkes me think she's tied into some contract that she has to finish out. You see her on any other show, and she's normal yaguchi. Anything HP and itfeels like she's just going through the motions. Some of the hp pics right after she had the problem, she looks downright angry in them.