User blog comment:Kaido King of the Beasts/Chapter 821: Last March of the Elephant/@comment-27158424-20160331133421/@comment-182.93.67.156-20160331161302

I just checked the wiki to be sure. Mr. 5 arrives at whiskey peak to kill a spy from their organizatikn (vivi) as per his boss Mr. 0's order. So, yes crocodile wanted to kill her.

And about Momo. Doflamingo was allied with Kaido and it was never mentioned that Doffy wanted Momo for his own agenda. I know it hasn't also mentioned that he wanted Momo for Kaido. But being with Kaido and the Shogun in extension is the reason he came to know about Momo and how Kaido is looking for him. And being fearful of Kaido, I doubt he is after Momo other than to present him as a souvenier. And it hasn't been revealed either that people other than someone from Wano know that Momo's dad was in Roger's ship as Wano itself is a secluded island. Further, when Luffy does knock Kaido down, he will definately be revered and once he claims the island as his won similar to Fishman island, I doubt Momo will be in any sort of danger.