Well, first of all, she was only really fighting against Invincible. Secondly, I think she could’ve done that if she got pushed to her whit’s end, but she just cared too much about Mark, despite his evilness. Plus, Mark made sure to not waste much time.

There’s also the chance that that universe’s Eve isn’t as powerful as ours.

Edit: plot is probably the better explanation. That would make things too boring.