You merged the spouse of Jemima, but you didn't merge the Jemima profiles. When you have a duplicated family like that, you have to merge each of the duplicates.
I just proposed the merge for the 2 Jemima Bird profiles that you mentioned above. Make sure you merge Malcom into Malcolm profile so the surname matches the parents. Once those are merged, you will have all of the children together, and the parents.
Hopefully that helps.