@Gimmy That is one part of mind reading/foresight abilities that I wish more works put to use.
Every time I see it used, the answer is always to not think about anything or find a way to block
the opponents ability to see the future. I wish more works would go with the "too fast to avoid"
or "too strong to block, so foresight is useless" for a change.
My favorite fight of this type (that I can remember watching/reading) is from Fairy Tail of all places.
Cobra could hear Natsu's thoughts, so Happy told him to stop thinking, but he couldn't, so Natsu
being stupid wasn't any advantage. He tried to use AoE spells that Cobra couldn't defend against,
but Cobra had better response time thanks to the poison he inflicted on Natsu.
By the end of the fight, Natsu LOST. There was no way he could defeat him at that point, and instead
of pulling a transformation of friendship power up out of his ass, Natsu only escaped death because
his cries of frustration mixed with his Dragon Slaying magic made him roar like a dragon, which damaged
Cobra's ears and grounded him, ending the fight in a tie. And Cobra would have still killed Natsu if not
for the leader of Oracion Seis giving the final blow on him before he could recover, because Cobra could
still rest for a while and stand up to finish the job before Natsu got cured of the poison.
Unfortunately, I see this manga taking it up to two ways: either the powers are fake and Rokudou's group
will figure out how she's faking it (even if she has powers it won't be foresight, but something that allows her
to pretend it is), or they'll find a way to block her from seeing the future altogether.
I hope things go the way you described, but I have seen my fair share of this trope being used the exact same
way too many times to be hopeful.