Ralph states that a nonexistent individual, Cameron Makhent, signed off on Caitlin's father's death certificate. In the comics, Cameron Mahkent is the super-villain Icicle. This is also a reference to how Caitlin's ice-based powers manifested in front of her dad.
Okay, let's back up. My name is Nora West-Allen, the fastest woman alive. When I'm from, 30 years from now, I'm the guardian of Central City. I'm a speedster, just like my dad. People call me XS. Every day, I hope to live up to the legacy of The ...
Caitlin says that Gridlock's powers won't work in zero gravity because zero-G means no kinetic energy. Bodies have kinetic energy by virtue of being in motion and bodies can certainly be in motion in zero-G. For example, astronauts.