I think this is Amber's plan B. The most likely thing to go wrong is the 3F+3T, so they plan for another 3F in the first half for her to have another shot at the triple toe. I think the issue is that the 3T can go wrong in many different ways. Maybe, Amber falls on the 3F so she never gets a chance to try a triple toe, thus that won't affect the jump math for later in the program if she were to try a 3F+3T on her second 3T in the first half. Maybe Amber lands poorly on her first 3F, and she still doesn't attempt a toe, thus it won't affect the jump math. Maybe she attempts a toe, but she pops it into a single. Again, that's still fine, probably won't hurt the jump math. The issue comes when she pops the 3T into a double on both her plan A and plan B. I get the impression that they didn't really figure that out.
Amber's best course of action at Golden Spin after her first two 3F+2T was this:
3F+2T
2A
3F+2T
3Lz
3Lo+Eu+2S
3Lo
2A
However, I get the impression that Amber hasn't really been training her salchows. She hasn't jumped a salchow all season. So maybe this salchow option just didn't cross her mind. I'll be honest, it's strange that she doesn't have a salchow in her free program, since she can use it to replace a 2A and get some additional base value. Amber's jump layout in general is just strange, since she has a three jump combo, but she doesn't put it in the second half. Instead, she jumps it right before the second half bonus starts. Would she really be incapable of performing it a little bit later to get the bonus? Also, it's strange that she keeps attempting triple axels in the short, where a bad triple axel can bury her and take her totally out of contention, but falling on a triple axel in a free skate is much more forgiving.