You were still a bit bitter about Molly abandoning your friendship when you married Regulus. Speaking to Molly about anything other than the children was almost too painful. You were not about to admit to Molly nor anyone else in the Order that they had hurt you. Old wounds were best left unspoken of and left in the dark. It seemed best, to you, to appear as if their abandonment really caused you no emotional harm at all. If there were one thing that you learned from having Walburga Black as a mother-in-law it would be to be able to hide your true emotions like a champ.