She's simply saying that waiting for THEIR renewable energy plans won't even fit THEIR models, even the most credible.
It's fairly easly to see, except for those who choose to see what they want...and believe the AP spin instead.
What transparent dishonesty on your part. She stated "most credible climate-change models," not the "most credible" of "THEIR models."
"Simply waiting for low-carbon-emitting renewable capacity to be large enough will mean that it will be too late to meet the mitigation goals for reducing [carbon dioxide] that will be required under most credible climate-change models," she warned.