Sister in law seems troublesome

Just want to know here what are the Rights for protection for Senior Citizens against a "Poisonous" / Egoistic ( Very Very Smart Girl like Amber Heard ) Daugher in law in India ? ( We don't want any Divorce happening in our family though) -alternatively-- Is there any anything that protects Senior Citizens against an 'evil' DIL who is staying in Shared household ( the house belongs to girls' Father in law ), and refusing to do any work / Chore ? ( and is demanding Helpers to get the work done on Senior Citizens face ! ) ? Does our System not let the DIL to behave themselves while they are staying in a 'Shared Household' especially, behave themselves when they are dealing (verbally) with her in-laws (who btw has a sacrificing nature)! 'by behave' here I mean, to 'not' have / show an in-human traits like not asking in-laws about / not even bothering to care about them / not able to let grandparents(her in-laws) see the grandson(her son) / Giving away 'excuses' and 'impulsive' reactions to even Practical suggestions with elderly (Senior citizen) mother in law Position here- Location - Jaipur ( in India )( myself - 27 years old son of Sweet Parents (Mother - School Teacher and Father - Retd. Government Officer ) Brother - 29 years old son of the same Sweet Parents - Married - has a Disasterous Wife (my SIL) Mother - as mentioned v. sweet always Loving everything Retired Teacher Father - again, as mentioned, Very Reserved, Old School, Retired Government Officer SIL - mentioned below - (not working professionally, always refuses to get a job, when suggested by my Parents / her husband) - although prior to Wedding, she was working professionaly in the Software Industry! the DIL, is highly egoistic, I promise, if someone does her Psychometry test, she will definitely turn out to have ADHD ! She earlier (3 years back seemed ok-ish and fine, however, in last 2 years, post delivering a baby, she has gone nuts) NOTE-my parents were always against my brothers choice of Girl (this was an arranged marriage) the DIL visits her Parents (my brothers in-laws house), the DIL refuses to let the grandparents (my parents) see the granson (She does not deny straightway, however, she always informs she is busy) Note here- the DIL does nothing (She does not seem to have manners to ask for food to elders - her in laws / or sometimes her husband, she restricts herself inside a room alwasy) Whenever someone has any practical suggestion for her,she would 'impulsively' give a 'wordy' reaction the suggestion, or say 'no' without taking into consideration she is speaking to an elderly person (my mother / father - who btw are Senior Citizens) ! She does literally nothing, she has No Professional Job, nor she even bothers to handle 'ANY' of house hold chores (we ofcourse dont want her to handle chores, however, a girl when staying in a shared household, should atleast show some level of interest, as a matter of respect) ! But, in this case,