When I got my panties in a bunch with never getting a 'thank you' or any telephone calls from our 3 step-grandchildren even thought I sent their gifts home with our daughter and son-in-law or put them in the mail I was informed that we as grandparents were out of line expecting a 'thank you' as it was our duty to give . Needless to say they never got another thing from us!
And needless to say our daughter gets very little from us to for always making excuses for this ungrateful family.
And the flip side of this is...I have been making felt tree ornaments for years for a class mate of our daughter's 3 little boys and always send them a few $ on their birthdays and at Christmas time and you would think I gave them a million dollars.
So who knows what makes some people including families tick.