Share in the property

After my marriage in 2012, both my husband and mother-in law ( MIL) have forced me to undergo abortion twice, because for them children are a liability, in the sense, we have spend money on their education, health, marriage etc., and hence they do not want me to bear any children. However, when i became pregnant for 3rd time in Nov 2016, they again forced me to under go abortion but the doctor refused to give medicine saying it may affect my health. Both my husband and MIL mentally tortured me , when i refused to undergo abortion against medical advise and finally gave birth to TWIN female children in July 2017. There after, my husband has totally ignored and neglected me and my children , and I am staying i my paternal house. My mother in law has got a house in her name , which is gifted to her by her mother. My husband is a business man and has no property in his name. I would like to know , whether my TWIN female children have any right/ share i my mother in law /s property/house and if so , how to proceed against that, please advise.