L.G.
Had to re-edit my response to Kim's response..Wow! Got my entertainment for the day....and the gloves are off!!
Play nice ladies, ha, ha!
For my original response.....Ditto Denise M.!!
Wow, DIL has some nerve. Not to mention the fact that she is teaching her children a sense of unreasonable entitlement.
I would do as YOU feel is right. When it's one girl's birthday, buy that child a gift and only that child. The other grand daughter will receive her gift on her birthday. As it should be. As it is for every child.
I wouldn't even address it, I would just buy the gifts as you see appropriate.
Since Christmas and both their birthdays fall within a short period of time, it shouldn't be a big deal. Bottom line, both girls will receive Christmas gifts and their birthday gifts within a 2 month period.
Any pouting should be short lived.
Daughter in law needs to get a clue. I would never ask my Mother in Law to do what is expected of you and I have 2 daughters.