With a little waggle of the mug, he's going to offer her a drink. C'mon, he might as well share the bounty.

"I understand, I really do. What you need to know is how it works: I'll help you set up a small altar and then, on a semi-regular basis you leave some offerings there, and I'll keep the good luck going. If you don't make offerings, I won't actively harm you and yours, but I may not offer additional protection."