Hello again ladylush. You must be sooo tired.
Hmm. I know you've asked for tips on getting DD out of your bed, but I'm not the person to advise on that, because I'm a co-sleeping fan. My feeling is, at this stage, what is important is everyone in the family getting the most sleep possible in the circumstances - however that is achieved. If you can possibly entertain the idea, read "Three In A Bed" by Deborah Jackson. If not, you need someone else to advise really.
As for routine, your DD was 10 weeks premature, and so is effectively just a month old. I don't think there's barely a one-month-old alive who has a routine! From what I understand, the average baby is capable of/falls naturally into a routine at around four months old. DS was pretty textbook in this sense, with a morning nap, an afternoon nap, and a big chunk of night time sleep (albeit still waking for a feed or two) present by around this time. So maybe, for another three months or so, it isn't realistic to expect much more from your DD, and instead to focus for now on getting the most rest for all of you, however that's achieved - rocking, sling, co-sleeping, whatever.
You said that you don't mind your DD being in bed with you at this stage, so find out how to do it safely and comfortably for all, commit to it rather than resist it, and go with the flow for now. Hopefully, this way you'll all get reasonable rest - and it really doesn't have to be forever. And meanwhile, count down the (not many) months until your DD is bound to be more settled, simply because she's developmentally ready to be.
Hope this sort of helps, and that you get some better sleep soon.