in my opinion, this is another one of those matchups where if ur opponent is smart, you normally either say "**** im boned" or switch characters
but if you went through with it, learn to powershield and sheildwd for an approach, missles are one of the easiet projectiles to powershield causa their predictable trajectory and the general shape of em. If you she gives you enough time, throw out a baby shadowball in the middle of her spamming. they tend to **** em up alot
after you approch, you combo options are severly limited, as she is quite floaty, and has very quick 'combo breakers,' you'll have to improvise here, it's been awhile since i played this matchup
kill options are limited too, best one is a shadowball, second is like an upthrow at high percents, back throw won't do you much good at all, with a good DI combined with god recovery.