You'd have to be the judge of Gidget's reaction, but you don't have to be really overboard about Dexter being first; give Ginger her food, attention, etc. immediately after. All it takes is setting one dish down before the other, giving one the treat just ahead of the other, that type of thing. Sometimes, too, you can sneak a little scratch or pet in to the one who is second; that's a very reassuring gesture, and the dog who got fed first doesn't notice, because he's got his head in his food bowl. Tricky, hmmm?
My bunch, especially the girls, are quite emotional (Kharma's a regular Drama Queen), but they understand this since it's something that is natural in a dog's view of the world. Even Shiva, who is so incredibly sensitive and can literally turn on the tears at a moment's notice is perfectly happy and well-adjusted with the fact that Bimmer always gets his first. There are times when only one of the dogs is in the house with me, maybe the other two are out hunting, and I give the one with me some special attention and time. As long as they all know they're special to me they are happy monsters.
Having a little girl talk with Ginger will probably go a long way, too.
It's much easier to talk to them when you have them alone, too, so the one you're trying to communicate with isn't distracted by what the other one is doing. And trust me, the other one will do it's best to distract, just like a jealous kid!