SirVix - Thanks for your post on Saturday evening which cross-posted with mine. I honestly think that if I were to confront her and warned her off him it would have a totally negative effect. I tried to do that in the early days but, if anything, I fear it may have driven her further towards him. She would side with him and tell him and they would revel in their 'us against the world' togetherness. I don't suspect that LB is violent. I just think he controls her because, to a great extent, she chooses to let him. She has made a decision, which she believes to be the correct one for her, that LB is right about everything and anyone who disagrees is therefore wrong. She loves and idolises him to the extent that there is no room in her life for anyone else but their DDs, to which she is devoted. They are their own separate unit and they don't need anyone else.
Nettle - I do know which university she is going to and they do have a creche. I don't know what arrangements they are planning to make for the DC.
Sir Vix - It has crossed my mind to employ a private detective but I couldn't do it, as I would see it as a violation of her privacy. In any event, I know her movements, as she tells me. Her days revolve around looking after the house and children, cooking and shopping, and walks in the local park. LB sometimes goes on the walks or is working on his 'projects'
Random - I note what you say about childcare but I am reluctant to raise the spectre of paying for that, as the next thing they will be expecting us to pay that as well. Give an inch and they take a mile.
Fish - I think there is an element of truth in what you say, unfortunately.
Grohn - It seems as though LB has an identical twin brother who is with your DD. The similarities in our situations are extraordinary. I am so sorry, my dear, as I know just exactly how painful it is 
billy - I thought of her old friends but she has dropped them. When I asked about them and whether there had been any contact, she said she was 'on a different path' to them.
Gutterton - Your description sounds exactly like LB, I'm afraid, and the article is spot on, as well. I could give him my last penny and he would still be suspicious, hostile and resentful.
Cherry - I am not sure DD intends to do anything with her PGCE, at least in the short term. She is speaking of doing an MA and PhD afterwards through the OU and obtaining more government loans. I am being a bit careful about place names as being too outing, but she did apply to the university you mention, which would have been ideal, but did not gain a place. Of the three choices on the application form, the university she proposes to attend was the only one to make her an offer. Her subject is only available at about 5 or 6 places across the country. I note what you say about the rent but DH and I feel committed to that now and we want to help her to do the course, but not to be taken advantage of. They don't have a mortgage on either of the properties.
Random - I am aware that she can get the bursary on top of the funding, which I think is the main attraction to them. We fully funded DD2 through her Masters and still give some financial support, so she is not missing out, the difference being that DD2 did her course for all of the right reasons.
call - yes, I am going to leave it to DH to deal with the financial aspects. DH thinks we should pay the rent but nothing more.
Ariela - I would prefer to pay monthly. I don't think LB would spend it. The master plan is to buy property to rent out so that they don't have to work.
springy - thank you for sharing your experience which must have been painful to remember and relate. I recall your kindness from my earlier threads and you recommended the Coleman book then, which I read at the time, and I have visited his site. Thank God you escaped and I am a great believer in instinct and gut feelings. I was always uneasy around LB even before the fall out and the estrangement. You say so many wise things and your last post is uncannily accurate. That's exactly how it seems - like a cult of one. DD has been negatively influenced against us by LB and I am certain that the DGDs will be too, in due course, so it sometimes seems hopeless to even try to have a relationship with them. I think we will have a managed visit when we go and will be sent regular photos etc and allowed to buy them specified presents, but not to have anything like a normal or spontaneous relationship. Sometimes, I think I would prefer not to have any relationship at all, the uncertainty and the half- relationship and the half - truths are just too painful.
peeling - thanks for your supportive post
The latest position is that DD sent a friendly text on Saturday and video of DGD1 yesterday, which I duly admired, and there was some friendly vanilla chit-chat. There then follows another message saying that they have decided which area to live in and that she has completed various forms and is going to make her financial application - so at least she is applying for the government loan for course fees etc. I just responded neutrally saying that I was pleased that she was sorting it out and DH managed to get a low down on the area from a friend who lives there and he forwarded it on to her. No response yet.