Little Kim was recently out with her father Big Kim again:

North Korean leader Kim Jong-un made a second public appearance with his daughter during a photo session with officials involved in this month’s intercontinental ballistic missile (ICBM) launch, state media said Sunday.
Photos published by the Korean Central News Agency (KCNA) showed the daughter, presumed to be Kim’s second child, Ju-ae, dressed in a long black winter coat with a fur collar and with her hair partially tied back, as she walked hand in hand or linking arms with her father.
Yonhap
You can read more at the link, but some of the speculation I have read is that Kim Jong-un is show casing his daughter now to set her up for succession. She is believed to be 10 years old so I find it hard to believe she is being set up for succession at that age.
I think it is more likely that Kim is using his daughter to soften his image in preparation for any future negotiations. His sister has long been playing the bad cop with bombastic language and threats while Kim Jong-un is the good cop where he speaks more measured and is mostly smiling in photo ops.







