No one is being made to pay for it. The intern wasn't good enough. The fact that she didn't get the message when they told her she won't be rejoining her team

No one is being made to pay for it. The intern wasn't good enough. The fact that she didn't get the message when they told her she won't be rejoining her team isn't someone else's responsibility. Probably the best learning experience.. your company will let you down when you least expect it.