Krelka can be frankly too many places at once. She might not be able to hop realities like her kin, but she can sure fuck with time and space, which we've had to lay down a few rules to keep her in check
The last time she high-fived herself through time, it took us days to clean up after the mess it made. Nowadays she just pops up front intermittently while someone else has the reins. She's very interjective.