Recap

OK, after two weeks, time to inventory.

She's less reactive when I walk her, doesn't lunge at people or bicycles any more.
Birds still startle her more than they should, and she is far too aware of her surroundings, and far too little aware of me (when anything catches her attention, she does not react to anything I say or do, even the high value treats are ignored).
Other dogs elicit a dramatic response from her, frantic barking and lunging... that gentle leader is no luxury, I would have been quite injured by some of her responses: she is a strong dog and unafraid of using her strength to get what she wants.

The chickens are still a trigger for her, but she is starting to get that under control and can sit and watch them for a long time without lurching into a lunge. The rabbit is another story, she becomes quite distressed and still lunges at it furiously even though the gentle leader must hurt her quite a bit. There is some habituation, though it's effects are not at all strong.

I let her out through the back now, and praise/reward her profusely whenever she walks past without an "event" (lunge/attempted lunge/fixation followed by attack). Even though the weather is arctic, we walk past there a number of times when I let her out, trying to get her to have a succesful pass. Only the succesful passes are rewarded, the others get nothing. I try to have minimal to zero anger response to the lunges, try to keep my response calm and measured and definite. Chipping very small inroads, this will take some time. If she's even halfway this reactive by May, I'm not at all sure I should be taking her along to Drenthe to the woods, it will be an exercise in stress for her (and me).

I had hoped to see more progress with other dogs, outside, but that's not to be helped. In time things will get better, I am sure of that. The back yard is also no fun, but that will also improve over time.

On a positive note, she now recognises her name, knows the commando sit and will sit without instruction for her food. She also learned hand signals for sit. The lie down command and hand signal is not at all strong yet, that needs some work. She understands Stay even if she does not follow it all that much, and i'm working with the clicker to get her to make eye contact (which has been poor, except when she wants a scratch).
She and Sam are still great together. I still place Sam in the bench whenever they are alone together, though, and will continue till she's been here for over a month.

She's a lovely girl and I'm glad I adopted her. Yes, she's work. But in the end, she'll be a happy girl, and be shaped to be the best dog in the world for me!!