In-laws trying to separate husband and wife.

I married my husband in 2022. It was an intercaste love marriage ( He is SC, I belong to GENERAL category).He is currently posted in Lucknow in his job and so am I. I have been living in Lucknow since childhood in my parental permanent residence in Lucknow. After, my husband's transfer from Delhi to Lucknow this year, we also started living here with my parents in the same house. I have also purchased a new house to shift to soon with my husband. This year in May 2024 , husband was diagnosed with brain tumor and was treated at a private hospital in Lucknow. After discharge, my inlaws took him to his home in Kanpur. Since, ours is a love marriage,my mother in-law has always kind of hated me and during the hospital stay, created all sorts of nuisance and also her relatives. Now, after 4 months, while my husband is still healing and unable to think completely straight, she and her other family members have been trying every way to separate us. She wrote points against me in a diary to complain to my husband, she is against sending my husband to me so that he may rejoin his office. We love each other dearly but I don't know what to do. How can I stay with my husband together again.