When I was bowed down by the demands, many of them very stressful, of family problems, a wise woman asked me to think what I would value on my deathbed: either I had had lots of nice holidays or I had been a help and support to my family when they needed me. My answer? It had to be the latter. My family are more important to me than anything else.
Morethan I know you have been going through a really difficult time recently, but you are providing support to the vulnerable people in your family when they need it. Your poor DIL is suffering, as are your son and little GCs. You are doing an amazing much needed job, not being a Martyr IMO. 
If this friend feels ok about her choice, then that is her decision. Don't let her make you feel bad about your choice.
Adverts that are being shown on the tele
When a political leader lies on their CV - can you trust them?

