shes one of the harder adcs to play effectively. she has a simple kit. but honestly. i rarely see a good ashe. i see more good vaynes than good ashes. which is i usually lose if i am against a good vayne. she isn't high skill cap like draven or vayne but then again i see both of them played better because they have more otpion. a good ashe knows her limit and how to team fight. she like sivir. but a little harder to make use of because of her lower damage. until she has her Q active which then she does ridiculous damage
the thing is when i play ashe. which i dont know how to play her is that i got ganked to oblivion. she is slow. no escapes. no hard cc. nothing. squishy as hell. bad at dueling. you get ganked you die or blow summs
bottom line is that she needs a good team and team work and peel to be good. which then shes one of the better adcs. thats why she isn't popular in low elo because matches are pure luck wheather you get a good team or a bad one.
ashe is known to do less damage than pretty much any adc. but when she has runnans and her q is active. i've seen one time an ashe got an instant 1v5 pentakill. in which 3 of our team were dead. and i was the tank just peeling for her to get that penta. it was so instant. like twitch getting out of stealth getting a kill instant.