Suhana is just as sane as I m & Just as Insane as I m . That being said , Yes She is Childish , Dumb but Not Mental . If she was than V would have seen it . But She is getting to my nerves a lot these days . If U r referring to her Childishness & Ability to focus on just one thing & Just One thing & Not to mention , Taking the Words out of context & take whatever or just literal meaning of a Sentence or advice given by Others & than Yes Suhana has a lot to learn . but her ability to focus on one thing , makes her Obsessed with one thing only . Which is not Sane or right.
P.S. I have called Suhana Psycho before multiple time . Mostly cauz of her Obsession with Khushi . To which I think she is over stepping her boundaries . So I m Sorry , If I have caused Pain to those Whose Family Members r suffering due to those conditions. I didn't know & I'll b careful from now onward . Thanks . đ