You don´t need special diet food, just reduce the amount of food she gets. And of course pick a food without any sugar or grain, these things are not helpful with reducing weight and besides of it they don´t belong into dog food anyway in my opinion

Does Mya actually seem hungry on her previous portions?

I'm sure Liz will not agree with me here but I wouldn't switch or reduce THK until she's hit her weight goal which won't be for long since she's only got a few pounds to go. I say that because Keen is very filling and if she loves her food then it'll make it easier on her and she won't feel as hungry. It's worked for her so far so why not carry it out for the last 2 or 3 lbs that she has to lose.

Raw is of course better so upping the raw portions and lowering THK would be my preferred method but I know that will depend on how much raw you have on hand, cost, and freezer space.

And of course I think you'd be fine just keeping your normal feeding schedule as is and lowering the kibble portion just a tad to compensate for the extra calories. I'd really do what you feel works best for you. Sugars or not, I am still a huge fan of Keen and my sibe has really done amazing and thrived on it combined with raw. He lost all his excess fat when on Keen + Raw and turned into a gorgeous, healthy little muscle machine. When I decided to reintroduce grain free premium (hi protein, low carb) kibble in small amounts back into the mix he started getting what I would consider the doggy equivalent of love handles. It was like as soon as we started giving even the smallest amounts of kibble he started gaining the excess fat again (and yes, I did compensate feeding amounts). It wasn't a case of him getting "fat" on kibble, it was more a case of kibble makes him less lean and muscular than he was on THK + Raw. Based on my experience, I much prefer Keen + Raw over Keen + kibble or even kibble alone. But to each his own. I just know the results we've gotten with it with our dogs and I can't argue with what works for us. We're feeding grain free Grandma Lucy's right now but I'm still happier with it over grain free kibble despite all the starch (potato) it has.

I'm sure Liz will weigh in when she gets a chance. Do what works best for you.

Yeah, I don't agree with not lowering the HK. Keeping your dog in the constant half-starved state really just isn't healthy. She's hungry BECAUSE of the THK too high... The more you feed carbs, the hungrier she is going to be, regardless. The weightloss isn't any different than if you fed a kid mac n cheese everyday. Sure, they lose weight and they LOVE it and it fills them up. But it isn't healthy. Even if it "isn't long" it still does damage.

I'd do this:
Reduce the HK by a third first. Up the Core by 1/6 and the RAW by 1/6 to make up for it.
Split the meals/proportions this way:
Feed RAW and a quarter of HK in the morning.
Feed CORE and the 3/4th of HK in the evening.
This way, she is getting protein that she can use during the day, enough carbs for daily functions. CORE for regular feeding, and the rest of her HK portion for the night-time, so she doesn't wake you up at 3 yowling for another meal. Low metabolism when she sleeps, means sugar gets processed slowly, lasts longer.

If you were to only up the RAW, her proportions would be off, and she could gain wait again with the amount of carbs her body is getting.

So same proportions, but leveled out so your protein/carb ratio is better suited for her needs.

She shouldn't "act" hungry. Eating her food with vigor is NOT a sign of being hungry. It is a sign of a happy dog with a dose of respect for the food, as well as a healthy appetite.

If, by chance, she gets hungry "stomach growls", then you can up the HK to 1/2 of what you are feeding, instead of 1/3. In response to that, you should also up the RAW.