my mother is 80 on a pension, moaning she can't afford xmas gifts for all the 25 grandkids and great grandkids and parents of them...so i said i would buy for all of them..(including her 2 best friends and their 2 adult children )..i also have to buy for them and my family...its cost me a bloody fortune and not one word of gratitude from her....aibu to want at least a thank you ?