Yeah, it sounds to me like your portions are OK, you're just feeding too many times a day. If she turns into a picky eater, you can try a couple things. You can just insist she eat what you give her, or you can add a teaspoon full of a high-quality canned food. Merrick is rated highly. And despite what a lot of us have heard over the years, some people actually say canned is better.
I find that picky dogs change their minds real quickly when they have no other options, but I do want them to enjoy what I give them.
I supplement with home-cooked, too, a Dr. Pitcairn recipe. But it's pretty involved with supplements, etc., so I didn't want to bog you down with that. If you ever want to try it, I'll send you what I know.
Ugh, I just searched, and you're right. Alaska Mill and Feed in Anchorage is the only place to get Orijen in the state.
Yummy Chummies should be everywhere because they're made in Anchorage. I've found them in Vegas! I buy them for $9.50 for a 2-pound bag at Costco, but, uh oh, I don't think you have a Costco either! Any pet store should carry them. I like them because they're soft, can be broken up easily and the dogs can eat them quickly.
I forgot to answer your question about restlessness at night. She may just be a bit confused right now and be a little needy. Where did she sleep at her former owner's place?