"I drove away slowly, and I kept telling myself desperately that I wasn't saying goodbye.”
Here, Howie has been told that he can no longer see his daughter Holly on Thursdays, which is usually his designated day to see her. Howie is devastated by this revelation as he enjoys seeing her but realizes he must make changes in his own life and attitude if he is to continue seeing his daughter.
"And that moustache." She shook her head. "I still say a seventeen-year-old has no business wearing a moustache."
In this passage, Mike's moustache is first introduced and his mother reveals her dislike of it. She suggests that he is too young to be wearing a moustache, implying that it makes him look older. As such, it is believable that Mike's grandmother might mistake him for her late husband.