Oh so true! I had my w text me 2 days before school started to say that D14 had failed her eye test at school with her contacts on and needed to see the eye Dr. BEFORE school started. I asked why she had waited until today to tell me and she "forgot". I told her I'd look into it and had to take a day off work, take D14 to the eye Dr. and order new contacts for her. I texted her back that I made an appt. to take her and she said "I can't take off work!" I told her that I had it handled and explained what i was planning. You know what I got back? Nothing. Not a word. When I texted her the next day all she wanted to know was how much it cost.
I think they are somewhat embarrassed by the memory loss and the last thing they want to do is admit any "weakness"! Also, they never want to say "Thank you" for anything you do that may help them out.