There is strong anthropological evidence that maternal grandmothers have been more involved than paternal grandmothers across societies and across time. You may not like it, but that is the situation. It is also the case that children were and are more likely to survive to the age of five if the maternal grandmother is alive and lives near to the child's home. Obviously, this is more evident in poorer societies where resources are marginal, but also applies in the relatively affluent West. There are strong genetic reasons for the support of maternal grandmothers vs. paternal grandmothers. It is much more likely that a daughter's child carries one's genetic material, whereas a paternal grandmother can be less certain of this. Of course, very few of us are aware of this influence on us. On an individual basis, we can defy the trend, just as we can other biological influences. Go ahead and be an understanding, supportive grandmother, and beware of resentment of the other grandparents - it never helps!