Board Thread:Theories and Speculation/@comment-734582-20150712141917/@comment-26911440-20151208141709

Thekillman wrote: I had the impression it wasn't from happiness, rather the mixed emotions towards her father.

Either way if it isn't, still show's that there is more to unlocking it than the usual hate/near death experience(Though Sasuke almost did kill her) and that there is more to unlocking it.

Going back to the previous topic, he had the regular 3 tomoe sharingan when Hagoromo introduced Sasuke as Indra's successor. If Hagoromo had a sharingan, then his son's eyes wouldn't be a mutation to him.