Is skiing a good differentiator

If she’s not a good test takers she’s unlikely to score 33-34 since 99% don’t. (A poor test taker with mostly honors courses would score 20-24, a good test taker 27-30. So, not sure whether your expectations are off due to this site’s slant or if you’re way underselling your daughter.)

I have trouble seeing how she manages high level tennis, national level skiing, and piano competitions with Carnegie performances. Typical this type of profile comes from kids puffing up on the Chance me threads.
That + no AP IB AICE DE + 33-34 used as a projected score for a poor test taker, make it hard to give good advice.

She could just apply ED at a good D3 college (or a D1 if he’s reached out to the coach and s/he’s replied positively) and be done.

I wouldn’t ski in Europe in November. Best snow is February (Dec-Jan, March are good too). Often there’s not enough snow in November.