I don't have instagram so I can't check the validity of the accounts that reply to her, but I don't doubt at all that at least one ardent well wisher and one mouthy troll are socks of Kelly herself, as she is very well known for both especially when it comes to reminding people she has a kiwi thread (or back in the day a lolcow thread). It's all part of her eternal victim game.
For those new to this behavior, it's actually pretty common around these kinds of forums. Having an enemy on hand to bolster claims of victimhood is always handy, encouraging both sides keeps them the center of attention both through positive praise and negative criticism, bringing them to your own page means you can control the narrative and add provably false or outrageous claims to otherwise sound arguments so you can refute them (and censor the ones that you can't) and it means you can slip in to the discussion with an anon account on any of these sites and say something stupid (Usually cows will make particularly violent threats against themselves), screencap it and use it whenever someone accuses them of exaggerating.
We're actually a very safe enemy for a lot of cows to cry about since aside from discussing we (for the most part) don't actually DO anything. So they can slap their favourite labels on us (I believe at this point we're all a bunch of "Alt Right Nazi Red Pilled Cuck TERF Liberal Transphobic Chad Faggy Jews with a body count" according to the combined wit of our loudest detractors) and we'll just sorta carry on in our own little world while they scream about all the things they fantasize about us doing to them and how they're so brave for standing strong in the face of these fantasies.
That said, I know I've made this plea before but if you're lurking here after seeing her reddit thread, or were brought here by others means: Please do not interact with her on her page like this. Her followers know what she's done, we know what she's done, she knows what she's done, she knows we exist (hell she has an account and MANY socks here) so you're just feeding into her delusions by calling her out on instagram or facebook.
Come discuss her in the relevant areas (here, lolcow, reddit, where ever) because you're only giving her what she wants when you post like that.