No doubt Suhana has been behaving immaturely lately but in last scene i don't think suhana was at fault at all because ... she never intended to ask that question from BM...it was only that as she was asking everyone so she unintentionally moved towards BM also.
Oh come on Renu ji u don't say that..BM's issue is not new that Suhana got lost in between others. Its not some fresh thing that Suhana is not used to it