"She also said that she could cut my older brother some slack (he also enrolled his kids in Christian private schools years ago) because he was never baptized"
I get that too. My two older brothers are unbaptized unlike myself. They both swear, drink, and live with their respective partner and kids out of wedlock. One of them recently criticized my mum for spending time with them considering all this and she replied that she doesn't care - they can tell dirty jokes and drink and swear like troopers around her and thats ok because it doesn't bother her.
My brother's partner also recently gave birth to a beautiful baby boy, and all of a sudden my 3 JW sisters come out of the woodwork wanting to visit them and meet the new adidtion to the family. Yet none of my sisters will have contact with me because I dared to live with my now wife before we married last year! WTF!!
And my mother has repeatly warned me that if I were to be DF or DA myself that she would have to limit her association with me! WTF!!!! My (worldly) wife cannot for the life of her get her head around this thinking, and I don't blame her.