IBDP plus AP plus ECs will be a challenge. But again, it depends on which IB courses and which AP courses. Not all IB courses are of equal rigor, particularly SL. Similarly, not all AP courses are of equal rigor.
Not that this is DD’s intention, but I will suggest against supplementing her course load with duplicative courses. I have, as an example, seen students take AP Calc plus IB Math HL. And shame on the high schools that allow that. In some instances, she may want to take the AP exam corresponding to the SL course, since few colleges give credit for SL. Finally, if she’s looking to take fluffier APs with the thought that AOs will be impressed, they won’t be.