Ireland Baldwin called out Cadence Owens on Instagram for her insensitive tweet.
The feud began after the activist compared the tragic shooting accident to "poetic justice."
The 25-year-old didn't mince her words as she expressed her anger over Owens' words.
Alec's daughter described the Trump supporter as a "disgusting" person for disrespecting the dead.
Owens fired back with a message that indicated Ireland's father got what he deserved.
The online feud continued in the women's Instagram Direct Message (DMs).
After a long battle of words, the pair finally ended the fight.
Ireland had previously given her condolences to the late cinematographer's family.
Her father also released a statement expressing his sadness on Twitter.
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