My daughter and son in law separated by the home office rules

My daughter is 30 years old and married to her husband who she has been together with since 2012 which is 6 years this September and married for 4 years July 15th. All because my daughter suffers with epilepsy and cannot work as she is a danger to herself and others she does not meet the financial requirements to bring her husband to the UK which is all wrong. Her husband lives and works in India all my daughter and my son in law want is to be here in the UK as a family it's wrong how they have to live separate lives and only talk and see each other on video call. My daughter has recently come back from India from seeing her husband I can't bear to see her heartbroken and she can't keep travelling there cause of her epilepsy. They belong here together in the UK if my son in law was to come here he wouldn't claim no money from the government he would go to work and support himself I know my daughter can't bring him but surely the home office can see what they are doing to my daughter and millions of other families by keeping them apart just because you don't meet the financial requirements. It is wrong and heartbeaking for my daughter and son in law and the home office must be made to understand this please help me to bring my daughter and son in law together here in the UK as husband and wife