^
Sorry--we had a very, very long serial laying out the sources of Mei's problems with expressing her feelings--family pressures, self-imposed standards of achievement, fear of social judgment, etc. The only time she could be herself and even begin to express her real feelings was when she was with Yuzu.
So all those problems went away with a wave of the author's magic wand--Grandpa doesn't insist she get married, the school is fine because reasons, Mom and Absent Dad couldn't be more supportive, yadda, yadda, yadda.
So now that all the pressures that tied Mei up in psychological knots throughout the regular series have simply disappeared, how does Mei deal with her new-found freedom and social acceptance?
By going (remaining) semi-catatonic, insisting on a regimen of absolute chastity, and trembling in fear/anxiety at . . . just about anything.
So for me, "Mei-bot" it is until the slightest bit of counter-evidence appears.