Congrats on the great new connections!
I would take your client's statement as an open invitation to include the friend in the conversation - she's clearly interested and the first PC is talking you up already, so while your main focus should be on your contact, do find ways to include the other person in the discussion. She may very well pipe up with her own questions.
And I agree with Serita, it would be smart to be prepared with paperwork, business cards, etc. for both of them.
As to how to seal the deal, I'll tell you that more than anything else, clients gravitate toward a confident service provider who clearly knows how to find their pain points and offer solutions. So go in there with your confidence high and really listen to what they tell you. Then use your brilliant powers of deduction to hone in on their biggest needs as business owners and offer a solution
Please let us know how it goes! Good luck!!