why did kirigi kill Elektra's mother ?

1 and 5 - The fathers owed a debt they couldn't repay, so he took the mothers. (according to the movies) Comic book Elektra's mother has died in different ways.

2 - I assume he didnt kill or take her because she walked in when she wasnt supposed to, he was just escaping. If he knew she was a treasure he would of recruited her.

3-4 Before this she was in the movie Daredevil, she fell in love with a guy called Matt who is a blind superhero who roams NYC fixing injustice, Elektra's father is murdered in Daredevil by the villian Bullseye, Elektra wants revenge and she mistakenly thought it was Matt first, after realising it was Bullseye she has a huge fight on the rooftops and he (bullseye) impales her with her own blade and leaves her for dead, she crawls back and dies in Matts arms. Whats not told during the film is that Stick and his Ninjas hijack the ambulance carrying her corpse and revive her at his base. Stick trained Elektra growing up to harness her gift, Elektra like Abby was a child protege, Olympic level athlete with some above human strengths and powers, he wanted her back because he knew she was capable of big things. Elektra bewildered by her resurrection and fuelled by anger was banished because hate was not the way, Stick wanted to teach her a lesson. During that time she became an assassin to get by (in the comics it's to fuel her bloodlust like nature to fight)-

I typed fast , sorry about spelling and grammar lol

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