What makes her even more nostalgic is that if she wants to look in on the kids doing their homework, she has to take her attention away from whatever she is doing and make a special trip up the stairs, and inevitably there are times she'd rather not make the effort.
更教她耿耿於懷的是，以後想看一下孫子做功課，還必須打定主意，專程上樓去，不免心中先打了退堂鼓。