I don't think much of anything is required to explain TTK at this point. Attempts at producing artificial kryptonians always result in telekinesis, and the standing explanation that this is because kryptonian invulnerability is actually an unconscious, brainstem-level telekinetic field has yet to be contradicted that I'm aware of. Thus a kryptonian with TK of any kind isn't any different than a badass normal Batman/Shiva type slowing down or stopping her own heartbeat.