Part of the knee jerk reactions that have been posted are not because your mother in law offended you - the repeat of the comment offended us. She dragged out forgotten memories of some of our youth (or present) of the comments we have heard from each other, strangers and family members.
This site is a godsend for so many because we have never had anything dedicated to the health, growth and care of hair for women of color. I'll testify that I never thought in a million years my hair could look, feel and grow so good!!!! I count it all joy.
Unfortunately - just hearing the comment cut into us - but it is not about us - apologies are in order - did not mean it take them out on you.
You are an adult and I for one accept your decision to not be offended. No worries there . . . I'm more concerned for the impression these comments may leave on your daughter. We do not know - nor do we need to know - the amount of interaction your daughter has with her step granddaughter - but regardless of the texture of your daughter's hair - it would be nice to know that her step-grandma respects its beauty the same way she does her white grandchildren (granted she has some).
It's 2009. Disney is about to drop a movie of a black Disney character with long hair (FINALLY!!!). If Disney can have a change of heart - perhaps its time for others to do the same. . .
Some of the strong reaction is left over from the Chris Rock movie. Morale's been down and tempers up since his promo junket.
OP seems to have granny on lockdown tho....she said that upthread, tho what you say is true.