Oh, I don't know that any of them survived or became Awesome Heroes (there's more to heroics than DNA, obviously) but I don't believe that she only made one - flinging a light into the future is great, flinging twenty lights in the hopes that one of them lands is better.

We know that there were more cradles than just that, and yeah, it's harder to get to Coloradoish from Venezuela than from the other side of Colorado... but it's certainly not impossible.