Sohail is behaving similar to how shagun was behaving after getting ishita kidnapped by goons...helping,consoling,trying to find the culprit and all...and so just like anil's letter couldn't make raman believe shagun was the actual kidnapper, here too ruhi will not believe ishra that sohail is the actual culprit here even after getting proof...according to some spoiler ruhi will even bail out sohail after raman put him in jail.
Though i am not satisfied of the reason given by ruhi for not sharing with ishra but it is true that if parents always react angrily and takes impulsive actions everytime then kids will be afraid to share anything with them.Every new comer knows how to get into good books of bhallas and get a free pass to their house and family tree...may be shagun has written a book on "101 ways to fool bhallas and get entry to their house"😉😆On a serious note it is really life shattering thing for any parent and the victim...in real life it will be very difficult to remove the fear and scar from the victim's mind...but then in YHM it will not have much of an impact after the case gets solved just like all other sensitive issues shown earlier.