DEAR ABBY: My 25-year-old son, “Jay,” would like to come home for Christmas. I’m paying, so I made his reservation yesterday. Late last night, he told my husband he needs to go back two days early because of work. This change will cost around $150 more than the $215 I’m already paying. Although my son earns a six-figure salary, he is unable to pay his student/parent loan on time each month. When he’s late, I get harassing emails and phone calls. The loan is in my name because Jay blew all the $60,000 he got from a settlement, and he ...