An impossible expectation when she's been hostage in a landlocked country ruled by arguably the strongest fighter. A creature whose not only his father but had great expectations for him to succeed his empire. Outside other Emperors and Worst Generation, none of the crew we've encountered were going to invite her. And risk getting Kaido mad. As for the potential crews its Luffy whose broken her shackles, its he who formed a bond with Oden's vassals and sucessor, its he whose getting implications of JoyBoy, its he whose leading the declaration of war against her tormentor. I could go on but I think you get the picture.