Was the second pink lighter than the first? Pink is actually encouraging - I would have expected almost red, from that fabric.
I would probably wash again in Retayne. Are you sure you should have washed in hot after that? I've never used Retayne but I was told that hot water will de-activate it. So I would wash in hot with Retayne one more time, then in cold with a colour catcher and see how it is. Then, assuming you can trust the recipient to never use hot water, you should be good to go.