A false premise that I keep seeing: "Valby can't kick"
She had zero incentive to try and kick with ESP. She said in her interview that she didn't care about winning her heat and just wanted to advance. For all we know, she might have a good kick.
If she leads again, she's basically just rabbiting the big 3. Unless she is secretly in 14:25 shape, she won't be dropping them. I think that she should hang back with the pack early and look for an opportunity to throw in a surge when the big 3 are out of position to respond. If she can open a 2-3 second gap on them and just press as hard as she can, that might be all she needs.