That's great that Erin's business is taking off so well, though I certainly understand her feelings about the price increases. I'd feel awful knowing that the people most likely to need my services couldn't afford them.
Have the two of you thought about creating an "Erin approved" network of up-and-coming psychics who could take on more price-sensitive clients? Just have a note on the Book a Reading page: "Are these prices outside your budget? Consider a reading from one of these highly recommended professionals..."
It seems like that could be a win-win for everyone: people can get a reading from someone they trust (due to Erin's recommendation), professionals just starting out can bring in new clients, and Erin can get referral fees.
Just a thought.