[ It's obvious that Strange has some issues with that, but what they are Lambert can't even begin to guess. Still, at least he's going to offer up some explanation, considering Strange missed out on it due to the whole being kidnapped thing... ]

The Ringmaster said making a new Winter Maiden would take power that the Winter Queen doesn't have yet. [ Key word being: yet. ] Summer can't make a new Maiden while the old one is still alive. So for now, they're both missing some of their power.