Sarita's a weird one, because she's got all this Lucha training, so in there with other girls who aren't trained that way it tends to get a little sloppy. And just by design, women's wrestling looks a little sloppier than men's wrestling to begin with. (A generalisation, I know, but I watch a lot of women's wrestling so I say it with love).
And even with girls that are trained to the style, like Daizee Haze, Lucha's so complex that if you slip up even a little it's hard to hide that you've messed up.
Anyway, point is, Sarita's a great worker against the right opponents. The problem is, maybe just under half the TNA Knockouts Division is made up of 'the right opponents' and the other half not.