I also think Queen Mary was like Queen Victoria in that she had no particular interest in babies per se - unlike the Empress Frederick. Indeed, Queen Victoria frequently teased her daughter about her love of babies and wrote, in 1880 "As regards the baby [whose is not absolutely clear from the text, but probably the Princess Charlotte's baby Feodora, born in 1879] I think you are hardly a fair judge. Hardly anyone I know has such a culte for little babies as you have, and young people are generally not so much wrapped up in them. I know dear Grandmama went into such extasies over them, so that I felt the reverse". While Queen Victoria in her turn was sometimes inclined to overstate the case, there wasn't any modern expectation of involvement in babies and children for women of Queen Mary's generation and social status. If she wasn't particularly interested in babies, and had no special feeling for children, she would take a conventional approach which was firmly disciplinary and fairly remote - but not in any way different from that of other mothers of her time and class. But her genuine distress over the premature death of her son Prince John, must surely absolve her from the charges of a lack of affection for her children generally. As they grew older they became more companions to their parents and I believe she and George V were very much bereft when Princess Mary married. Princess Elizabeth was their favorite grandchild - the others really didn't come close - but as mcdnab says, they were much more relaxed with her at least and the quote he mentions from Queen Mary's diary refers to the visit of the three-year old Princess Elizabeth to her grandparents in Bognor, where George V was recovering from a severe illness, where she recorded "G. delighted to see her", and the next day "I played with Lilibet in the garden making sand pies!" It's not uncommon for grandparents to relax and be more natural with their grandchildren - after all, they don't have the primary responsibility and can do a bit of spoiling.