Sakura understands. She is a Master, after all. That's what she was in her world, in any case. As such, she had cooperated with Servants. They were not quite gods; more like gods scaled down to demi-god warrior in vessels. Shells. But still, something much more than a human.

She may look like a rather hapless individual, and indeed, she was young and unworldly. But she had her mage instincts. And she knew she was probably outclassed here. Still, she had been giving the matter some consideration, and there was something she could contribute: Bios. Of course, it always went back to that, huh? But the analogue to mana in Sakura's world was close enough that the concept made sense to her.

She wishes to contribute. She knows she can do so. Therefore, watching from a certain amount of distance, she channels her Bios -- her magic -- towards Emet-Selch in this particular endeavor. That was cooperation, yes? "Synthesis"?

Well, on Earth, she had quite a bit of mana. Not sure how that would translate here, but she figured it would be a meaningful contribution for a great sorcerer.

... also, sorry, bruh. Not like Sakura is necessarily trying to brush into you everywhere, but the two of them are on a pretty similar magical journey here, So.