Reluctant

Severus Snape kept to himself during the holidays. He had little work to do so he could brew for pleasure most of the time and read the rest. So when the Order comes to him for a favor does he say yes? It is not as if it will change his calm routine, could it?

This takes place after the War. Snape is obviously alive but Dumbledore and Sirius remain dead. Harry is 19.