Need to find a new seller for Raw Cow's Milk ... what to ask / look for?

Now I have to find a new seller and I am really nervous about finding someone that I can trust.  I didn't have to do any vetting with this woman that I've been buying from because practically everyone that buys raw milk locally buys from her and anyone that sells things relating to raw milk (yogurt cultures, etc) refer to her if you ask where to get the milk.

What do I need to look for if/when I go out to the seller's farm?  What do I need to ask when I talk to the farmer?  Thanks!