Anonymous wrote:OP here. Her prices are kind of high (dollar a pop!) would you pay her "list" prices or just offer her a set amount of money?
Ask her how much you owe her, and if she tells you the list price, pay it. If you were concerned about the price, you should have asked her in advance. I wouldn't have assumed a near-stranger would do that for me for free.
That said, it's a little unusual that she didn't tell you the cost when you made the arrangements, and hasn't contacted you about payment since. So it sounds like perhaps a less formal arrangement than people here are envisioning, but for the sake of kindness and community harmony, offering to pay is the right thing.