As she mulled the accusations against him, she asked, "How could you?" This is from a CNN report about the monster who abducted three Ohio women. 'She' refers to the monster`s daughter. Can 'Mull' be substituted by ponder over, contemplate, ruminate on, meditate on? It seems to me the ruminate on and meditate on both entail a long time of immerging into thinking, therefore not suitable in this case, because the interval between her act of thinking and her speaking seems to be very short. Which word is the best and the second best?