I'd stay away from non-magical based lasers (ie. hard light, Ancient Egyptian Laser Beams), but the idea was things more similar to the actual cero design. Like some chakra, some reiatsu (but not most Kido), and such. I don't know most fandoms... so yeah. She'd get backlash depending on how different it was to actual cero, with the worst being it wouldn't work and she'd get hurt with the full force from trying to swallow it.