I am no expert, but i too have a mother and daughter,and i would not say mother hates her but she is unkind to her, she will attack her for no reason, and chase her outside,they used to be more friendly, but mother kitty can be mean, i think it can be normal for mother cats to do this, i really have no idea why, my theory is, they want to be the dominate cat, and maybe they think their daughter should be moving on, now they are all grown up, who really know's maybe someone else can shed some light on it, but i think it is quite normal all the same.