What should i do?

Hello, I Wanted To Know If Legal Help n Rights Is Applicable in My Case. I am A 43 yr old Single Woman Who Has Been Dependent On Her Parents As I Have Suffered n Still Suffering From Various Physical Ailments . Two Years Ago I Fell Ill Again. But My Parents Not Only Denied My Right To Treatment But I Had To Beg Them For Food . My Mother Has Been Diagnosed With Dementia But She Doesn't Take Medicines n My Father Has Severe Depression And He Clearly Stated That He Could not Help Me .So I Was Suffering n Became Bedridden Due To Lack Of Treatment n Adequate Diet. I Have A Brother n Sister In Law Who Have Taken All Kinds Of Help From Us Yet They Do Not Contribute Anything At All. And They Didn't/ Do Not Bother Whether I Live or Die. Things Came To Such An Extent That When I Asked Them To Get Me n My Parents Treatment And Expected Cooperation From Them Specially My Sister In Law Whom I Had Loved n Treated Like A Younger Sister My Brother ( Younger To Me ) By 5yrs Abused Me And Threatened Me With Violence . ( In The Past Also He Abused Me Yet My Father Could Never Protect Me) .My Mother Supported My Brother And Called Me All Sort Of Names n Both Of Them Threatened To Throw Me In A Mental Asylum Taking Advantage Of The Fact That I Takes Medicines For Depression. Don't I Deserve To Get Well And Expect Treatment And Proper Diet ? My Father Lives in His Own World. I Do Not Have The Right Even To Seek A Comfortable Room..My Brother Has Power Over Everything Unofficially. I Wish To Live . What Should I Do? I Don't Have Any Money . Please Advice. Jebeena