Meteorite-Sized Plot Hole - Spoiler

If there was a baby Erica Durance gave birth to at the end, why didn't she have the baby in the other two alternate timelines? By the way, both the Butterfly Effect 1 and 2 nose bleeds are steals from the New Outer Limits, 1996, episode, "A Stitch in Time" with Amanda Plummer, as a scientist who travels back in time repeatedly to change it, then starts to develop nose bleeds, as new timelines are slammed into her head. But, then, it's not called "stealing," it's called "creative plagiarism," a highly accepted form of writing skill in Hollywood.