theres nothing to be sad shes realy great a bit slow at first play her safe to lvl 9 and dont try harrasing to much if they are ranged keep it cool and w8 for lvl 9 then simply burst them down health per health

try jumping last with ult and remove from the fight the cc or tank so your team can nuke the ad or ap carrys and finish off the rest with a minimum of deaths flash and ult thats the way to do it right