She doesn’t really show that many abilities other than being a good pilot and helping fix things.
cough Rey is impressive with a blaster and lands three accurate hits against stormtroopers, minutes after a scene that implies she’s never even held one before… cough
(Now, you could argue she misses her very first shot, but that’s just it, immediately after that she lands three accurate hits, which is impressive for someone who’s implied to have never held a blaster before; I know you’ll also argue Kylo blocks her shots with his lightsaber during their initial encounter, but she’s still impressive in terms of aiming a blaster despite, again, the implication she’s never held one before)