I appreciate the opportunity to help!
Unfortunately her situation is difficult. She is making an income that is not being reported. Even though she may be sending it back home, its still taxable monies. Aside from that, going back and worrying about reporting this is the least of her concerns at this point. Getting health insurance may be possible with a recent diagnosis, but it would be very expensive in terms of premiums. She may not be able to get coverage with a pre-existing condition. Medicaid is possible, but this income is a problem.
As long as the income is within 20% of the poverty level in Indiana, she could not qualify. She could start by cutting this income down to the poverty level and start keeping track of this and reporting it. Then she can prove that she has a small amount of money in consideration of caring for the gentleman. The pverty level in Indiana is: $10,830.00 per year or $901 per month. Then once that is established, she could apply for medicaid.