yeah, the statements are very generic.
the most specific thing i found is about her future when Tsunku says this..
卒業後は芝居に歌にさらに新しい事含めてどんどんチャレンジしていってほしいと思います。
卒業までの約7ヶ月は、さらに成長し「かっこよい真野恵里菜」状態で卒業し、
その後「新・真野恵里菜」になって皆様の前に登場してくれると思います。
"After graduating I'd like her to challenge herself little by little with plays and singing and new things.
In the 7 months until her graduation I think the 'Stylish Mano Erina' of now will have growth and become a 'New Mano Erina' in front of everyone."
and that's still pretty vague. ._. i'm getting JunLin vibes in that i'm sensing he's giving up rather than trying to finish what he started, and is just ready to move on and so he doesn't really have an excuse to give. it's not "the time has come to think about the next stage in her life" and it's not "she has attained her goals and with this timing will move on" and it's not for health, or because she's decided to focus on studies/home life, or because they decided to focus her career on acting, or anything really.
i'm still hoping that she's going to work with Kikka, but it's seeming less likely (not that it was likely to begin with). the statements were too generic, no vague references to having something planned, even.