My sister in law is now takeing care of her dad at home. He cannot live alone. She lives in PA. Who would she call for financial aide?

First of all, she should check and see if her SIL is on Medicaid. They sometimes offer some help. However, each state is different (these programs are federally funded but state administered). So, try going to her state Web site. Type "aging" in the search and follow the local links for information. You will find the National Caregiver Support Program on the site (could have a different name). This can also be very useful. Good luck.