And this is why Fubuki will always be one of my least favorite characters. At the end of the day Saitama, despite not being the brightest, was right. The second she's confronted by a truly strong monster she doesn't have what it takes to stand her ground. Genos may take a lot of L's but his first instinct isn't to run from a fight to the death.
Telekinesis is so wasted on her. At this point I'm sure even Teruki would reach S-Class faster than her and he's only a freaking pre teen.