Pregnant women asked to leave company citing redundancy of profile

Hi My sister-in law joined an company in aug 2017. She was hired to work for a client of the company at the clients location. 5 Months in the job she verbally informed her manager abt her pregnancy and in Jan 2018 , the client and her own company chucked her out of the job stating that her job profile has become redundant. The company had hired 3 more people for the same role who joined prior to my sister-in-law. But, they have not been asked to leave the company. According to her offer letter the company should give 2 months notice period before firing an employee. But the company gave her just 15 days. At the time of joining she was told that she is covered under the medical insurance worth 100000inr. She was not given a medical card during her tenure. Can my sister-in law file a case in the labour court? She had given verbal communication abt pregnancy.