How to say "但干奶奶之间意见常常不太一样" (dàn gàn nǎi nǎi zhī jiān yì jiàn cháng cháng bù tài yī yàng) in Chinese dialogue

“After a while, their enthusiasm became overwhelming. The couple started dreaming of them. They kept giving instructions, but they would argue between themselves.”

“They would fight each other in the middle of the night.”