That's the thing, if she had more stories, you could gauge whether she could. At this point, all she's done is infect Stark Tech, which when you get down to it, ain't that hard. Everybody from AIM goons to Skrulls have hacked Stark Tech.
Ultron was able to take over the effin' Phalanx. If I saw her doing some kinda feat as big as that, then I might be able to gauge her power. Since all I got is another Stark Hack, I gotta go with Ultron.