What would've happened if Marinette sacrificed herself instead of Gabriel?

A few zodiac classics, then the big murder, super natural and mystery one. (No idea what to call it) I give lots of credit to imakefandombibles for the cover- Thank you soooo much. I hope you enjoy... Warning: Contains suicide

Thirteen rascals are now about face a whole new world type of trouble ahead. The Zodiacs are thirteen of the most vulgar, disrespectful and troublemaking teens from the hood, trying to cause mayhem and doing whatever they want. Their life changes when a mysterious man named Ophiuchus appears and claims that these teens have unique zodiac powers and are Earth's only hope. Ophiuchus demands absolute loyalty and a readiness to sacrifice everything. However, ingrained distrust and the prospect of collaboration make this proposition a volatile mix. Accustomed to fighting for survival, not the planet, the Zodiacs face an impossible choice. The real question ain't whether they're ready to throw down against monsters. It's whether they can survive living under the same roof and not kill each other first.

In the corrupted empire of Tenebris, one must do whatever they can in order to survive.