Did you read this part?
“She went to a North Philadelphia home to meet the customer, who had agreed to pay her $150 for sex. He then said a friend was coming with the money, and that the friend would pay her another $100 for sex.”
She agree to sex with at least two men. That’s her own testimony.
One was bringing the money the other did not have. That does not mean she consented to sex with two men.
There were 4, and these 2 participated in the rape perpetrated by the other 2. An analogy would be legitimate customers in a bank that decided to join in on a bank robbery that began after they had done some transaction. They can't claim they were not a part of it if they participated in the robbery, and took off with with some of the cash.