Dd (year 10) is academically very strong - particularly in maths and science. She also competes at international level at her sport. It is a sport that the UK is strong at so there is a decent chance that she will be able to make a career out it.
Her “Plan B” is engineering. I think the best A levels for this is probably Maths, Further maths and Physics. (And these are her favourite subjects.) If you take the sport out then it would be sensible for her to do a 4th A level. (Probably Chemistry. She likes chemistry.) Keep her options open. But she is likely to spend a decent proportion of her A level years competing abroad so that level of course load would be tough. She has also been advised against science A levels by parents of older girls as it is difficult to catch up on missed practicals etc whilst maths (for example) can be done anywhere.
But I do worry about limiting herself. How bad is it?