The last thing that I remember Nico Robin doing before the time skip in One Piece was heading to see Monkey D. Dragon, leader of the Revolutionary Army. Did she train under Dragon or something else?

It seemed like what every other Strawhat did during the time skip, was obvious. Luffy trained with Rayleigh, Zoro trained with Mihawk, Nami studied weather at the sky island, Ussop struggled with the bugs and plants on the Bowin islands, Sanji trained with Ivonkov, Chopper stayed on the birdie island to study more doctor stuff, Franky worked in Vegapunk's secret lab, and Brook made himself a name as Soul King Brook.

If anybody knows or remembers what Robin spent two years doing, please tell.

Thank you in advance!
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