AlsoShe dies too so he keeps it on more in memory and mourning of his wife.
Honestly I liked all the characters. Hell the fact that they're all a family and for some reason Doflamingo seems to care about all of them is a refreshing change from the villains who just keep betraying their subordinates trust and get rid of them after one or two failures. The fact that Doflamingo keeps trying to get Law to come back was interesting too.
when that guy laughs at picas voice and doffy "kills" him immediately, god damn