I don't think it's really possible to release that much snot from a sneeze. Even if it was a power sneeze she should be covered in her saliva instead of her Snot. I think the only way to possibly release that much Snot from a sneeze is to completely cover your mouth and focus all the sneezing power into the nose. And from the looks from the previous panel it doesn't like she did that.
But beside's that, I actually really like this and (Ya'll might think I'm fucked up for saying this) I can kinda relate to this in some way. Because I remember when I was prone to getting colds because I didn't wear jackets or sweaters on cold days. Hope to see more starring these two, although that probably won't happen.