To run back to Iris’ family, the DC Comics do address her parents from the future with an intriguing storyline.
The landmark arc has Flash’s big rival Reverse-Flash facing off in between Barry and Iris going to a costume party where the couple dress up as Batgirl and Flash.
Reverse-Flash crashes the party and tragically murders Iris following her unrequited feelings toward the villain.
After having an entire drama-filled life in the future that leads to the death of Iris’ entire family, Iris returns to the present and she eventually reunites with Barry thanks to all the timelines that Barry can create through time travel and the Speedforce.