I wonder how the precognition is supposed to work. It's never explained clearly. Can they change what they see, or is it somehow set in stone? And what happens when two people have precognition, do their visions conflict, or do they both see the same? Can they change each others' visions? I'm taking Pryde's reincarnation as a separate case, but there should be a long history of these queens having this power, so the royal family should have a good idea of the mechanics of this power. The queen got her powers at 16, so both her and her mother (the previous queen) would have both had the power at the same time, for example.
The queen says her power is somewhat unreliable, but we never see her actively fight fate. She sees her daughter would be a terrible queen, and prepares for that (by being kind to the little sister) instead of trying to fix whatever was wrong. But she must have started having these visions when Pryde had just been born (maybe even before then, and that's why she named her after the worst cardinal sin, Pride?). So did her visions get worse over time, or better, or remain the same? Imagine if she sees something bad about Pryde, and instead of taking it as a warning of "make sure you raise her right and nip this in the bud", she takes it as meaning she should not let her become queen. Leading her to neglect her and the futures she sees becoming increasingly warped because of it. But if she'd taken a different approach, she might have seen better futures as she was more mindful of Pryde?
It's hard to tell how smart or wrong the queen was if we don't know how the power works. I mean, some futures might not be changable. A natural disaster, a drought, for example, is not something you can change or avoid, but you can prepare for when it happens. But at the same time, she clearly says that she didn't intend to let Pryde become queen. So she is acting as if she can change fate. Only instead of trying to make Pryde become a better person, she decided to give up on her and limit the damage she could do. So she was either doing something pointless, or directly acting to cause the fate she didn't want.
But this makes no sense either, because if she was thinking she wouldn't let Pryde become queen, and she still saw that Pryde was queen in her visions, she should have known her actions failed, and tried something different.
Also, this is probably the worst scenario for her. She neglected her daughter thinking she would become a terrible queen, and the evidence would seem to indicate that Pryde awakened to her powers, saw the same fate her mother saw, and decided to change it, leading to her mother not being able to see her fate anymore. Which means she could have changed that fate, but she did the wrong things. So not only was she a horrible mother, she failed to achieve the goals that her horribleness was intended to accomplish, and the daughter she was horrible towards fixed the problem alone without her help. So as she said, she fails as a mother and a queen.