Rights of widow and her son of her inlow's property

My name is usha , my husband died in accident I am staying with my 6year child at my husband home but my in lows does not want us. even they don't want take any responsibility of my or there grand son. I am house wife I don't have any sources of income , My husband was worked with one of private hospital, officially I did not get anything from his workplace but his office staff collect money there own and give me as a help. After his death my in low's treat me as bad behavior to leave their house. I don't have any option some body suggest me to do a coat case for my son's look after as any kind of financial help from my in low's but they are not agree to give any thing to us. since through out the year case running in saket coat but no result and my advocate said legally I don't have any right in my in low's property... I am very very tensioned and tried dip rest from all this going through, my little son is also suffering from this I want to take my case back now.& see what is god thought from me. sir please can you give me some advise please please.....