What is nidalee supposed to do after laning phase?

Look pretty, talk about mating season, throw spears, and if a spear somehow by the power of God actually hits something, go melee and try to execute whoever it hit.

Try to catch out targets, poke down enemies, buff teammates, and push lanes with mobility+waveclear. I think I suck ass I nidalee so I honestly couldn't tell you.

It all depends on what lane you are going, if your top lane I would say gank mid / bot lane, when I used to main nidalee I rarely farmed after the laning phase and instead harassed enemies in other lanes.