Palps lost her.. He sent someone looking for her but the parent hid her and Palps could not find her as the force was not awoken in her yet.
Why do we have to know that he had a kid.. Kings have all sorts of Bastards because they **** all the time.. Its one of the benefits of being a ruler..
This and this.
Any movie that brings back a dead antagonist better take the time to explain these sort of things or else they become major plot holes that ruin movies especially for people with out creative fan fic minds to distort reality and fill in blanks as they see fit so that they still can enjoy said movie. The whole scene with the cloned snokes was not just filler, it meant something- it was their way of explaining how palps is back without getting into too much detail to not highlight the inconsistency of "wait rey isn't his granddaughter its his daughter of his cloned son debacle. The whole trilogy was not thought out properly so they had constantly do stuff like this- attempt to hide plot holes in the hopes audience would just accept **** that's not explained at face value, including how he surived and how he has a son. The clones snokes was their answer and they intentionally left it ambigous to confuse audience member- but also for critics that say there is a huge plot hole- they can just reference the jars of snoke clones. Its terrible writing and I don't blame you guys for interpreting something differently, or should I say fill in the blanks for a director or movie studio that should have explained things more explicitly and not relied on books to fix the movies plot holes.