it's more that we first meet Sabine in a jedi wheelchair with Huyang declaring "she will never ever ever ever walk"
then we see her take her first faltering steps out of the wheelchair
and 5 minutes later she's beating Jesse Owens
i am sure the writers room and many many many discussion about this - they obviously chose a force power that we've seldom seen and that Sabine has no reason to be able to wield. they were very specific about how limited (or non-existent) her abilities are/were - SOMETHING has to account for this quantum leap