Although Tangning already made the suggestion, Su Youran still did not do as told. She was actually more concerned about Nangong Quan's feelings.
No, to be exact, she had subconsciously started to care about Nangong Quan's feelings. Hence, she continued to pick up Little Eggshell and the twins separately.
After living in the Nangong Family Home for a few days, she barely had the chance to see Nangong Quan because he was relatively busy.
Since he had only returned to Beijing not long ago, he didn't have the foundation that Mo Ting had. So, he was required to handle all matters personally. Besides, he now had someone to take care of Little Eggshell for him, so he had more time to focus on his work.
This made Su Youran a little uncertain about their relationship; perhaps Nangong Quan had really acted on impulse that day and didn't mean what he said.