My question involves child support in the State of: Illinois
My sister is pregnant. She is cohabiting with the father. He makes quite a bit of money in real estate but manages to file taxes showing zero or near zero income by inflating expenses and has been doing this for years.
Their future as a couple is up in the air. Right now while she is living with him is the best time to collect evidence of his true income.
What kinds of things could she do now? He lives a lavish lifestyle in a high income neighborhood, buying expensive clothes and going out to nice restaurants, etc. They keep their finances/bank accounts/bills separate. She doesn't have access to his paperwork.

