So what would you do in this situation?

I've been reading different thoughts on here, regarding giving proper notice when resigning. Most people agree that two weeks is the norm and the professional standard (which is basically how I feel); others say that four weeks should definately be the standard, the minimum, for a professional nurse.

What if you are resigning from a job that you hate, a job where administration treated you, as well as other employees poorly, where you were shown practically no appreciation from management......

.... for a job that is within walking distance from your house, where the administrators seem warm and friendly, the people who work there have good things to say about the place... in general, it seems like a much better job....

.... BUT, the DON at the new job, the job that you really want, said that she would not be able to give you the four weeks that you asked for? In fact, it turned out that you would not even be able to give a full two weeks to your current employer?

What would you do??

Originally the DON wanted me to go to orientation yesterday (Monday), then start working on the floor the following Monday. I was like... I can't do that! I asked her for four weeks... she said that she just didn't think she would be able to do that, she really needed someone like, NOW... that she may have to hire someone else. I thought it over and then called her back later and said that I would like to take the job, but could I start two weeks from this past Monday, instead of just one week later. At first she said that would be fine, but then somehow my starting date got switched to Thursday, October 21st. I thought at first that that would be okay, but as it turned out, I would only be giving my current employer about a week to a week-and-a-half, notice.

I do truly want this new job, and I honestly do not have much guilt over leaving this other job with short notice, given the way that I feel like they have treated me, and have treated other employees... given the way that they run the place... etc. Other employees there have left with much MUCH lesser notice; they should feel fortunate that they even got as much notice from me as they DID.

However, at the same time... I feel guilty for violating the norm, you know? But I feel like there wasn't much I could do. I guess I could have insisted on more time and if she didn't want to hire me badly enough, she didn't have to. But man... I wasn't willing to risk it. The power was all hers, eh?