How strong is Remilia's ability to manipulate destiny?

I'd like to test that kind of ability.

I see... well Marisa, on your way back home, you will be quarreling with some ice spirit and end up stuck playing danmaku.

Predicting the future huh... but that doesn't have any basis!

That's why you should later return by flying over the lake.

Well, then, you can't borrow these books!

Agh! Oi! That's sly, Remilia!

In the end, it's not a feat of strength.