Question about Michio Pa

Do we know why Michio Pa hates Fred Johnson come Babylon's Ashes? I know she gets a lot of flak for the the whole bombing of Earth thing, but this part always confused me more.

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From what I can remember her whole hatred stems from that Fred put her in the XO position instead of Bull when she wasn't ready and people died because of it. However, she's well aware that this was because the Belters wouldn't accept an Earther being second in command of their first warship and Pa herself hated Bull and tried to show him up at every turn to try and prove she could do just as good if not better than the "Earther". So she understands that Bull never could have been in command because of Belter racism, which she herself was an example of, but at the same time blames Fred for realizing this same fact...

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Am I missing something? Because as it stands it just makes Pa come off as a petulant child who is deflecting blame to the Earther to avoid realizing that the issue she's pissed about was due to her own people's prejudice. Which could be fine if someone actually called her on her bullshit, but no one ever does.