Well the thing is that we know next to nothing about Kate's motives. The only person in the series who might be able to give us a more or less unbiased opinion is Mozzie, and he never really makes his opinion clear. Meanwhile, Kate's own actions could be interpreted all the way from uber-evil manipulative bitch to a strong woman who genuinely loved Neal (as seen in a number of fics by florastuart or veleda_k). Here I obviously went with the second option.
Thanks for the comment :)