Grannieunite and Sombreuil, thank you for your posts and welcome to GN Sombreuil.
I don't think my DD is cold and I believe that she genuinely loves her family, but I do think SIL is controlling and after financial gain. DD is with him 24/7 as neither of them have jobs and don't seem to see other friends - I wouldn't expect DD to have a job now, but I don't see why he is not working as he has just completed a PGCE in a STEM subject, so there must be lost of jobs available (which he did just for the free bursary). Perhaps he wants to be there to support DD when the new baby is born.
This whole estrangement had its origins in finance. I had agreed to their request to help buy them a house when they left university, where they met, but pulled out when I thought he showed signs of controlling behaviour as I didn't want DD to be tied to someone who might turn abusive. I was probably overprotective as she had been involved in a previous such relationship and this seemed to have all of the same hallmarks. I virtually threw him out of my house when DD had been crying for ages and locked herself in the bathroom and he refused to leave. I threatened to get the police and told him that he was controlling, that nobody liked him, and that he wasn't good enough for my DD. So yes, I handled it appallingly and he has never forgiven me, although he pretended to have made up - I went out of my way to say I was sorry and make amends - when he wanted money. He wrote a rude e-mail accusing me of dishonesty in not keeping my promises, insulted DD2, and said I should make amends financially. Shortly afterwards the ghosting began.
We didn't even have DD's new address and I had a conversation with her late last Christmas Day - fortunately I was pleasantly mellow by then, as it wasn't a particularly nice conversation. I had transferred £1,000 to her account for Christmas as I was worried she might not have any money as he is very frugal. She never has new clothes or make up or a hair do, a meal out, or a drink (they don't drink at all). They never go out and he doesn't seem to have any friends, DD has dropped her very good friends from school, who were very upset and contacted DD3 to see if she was ok.
Anyway, she didn't seem particularly pleased with the gift, said that she was very hurt, that I 'had' the family', that they were scrimping and saving and couldn't we give them a 'leg up'. So I said that we would support her to do the PGCE course she was talking of doing, which is to be next year. Then suddenly we were given her address. Now, when we have given the loan they requested, we are told of the existence of DGD1. So yes, I am wary, but I do think that he is directing matters. DD regards him as 'head of the household' and is quite passive. That's why we are keen to support her in this course even though it will involve paying rent in the south east for at least 18 months, as I just want her to have some independence and break out of the bubble and meet other people. However, funnily enough, he has decided that he will get his one year qualifying teaching job when DD does her course and they have decided to put both DGD in the university creche - which I think will cost about £400pw - so I am just wondering if they will expect us to pay for that, as well as the rent on a family house for a family we didn't know about....
However, I've got to say that DD says she is very happy and SIL seems a very devoted DH and father. And that's all I want, for her to be happy, but I am wary. We made the 'loan' with our eyes open and I don't object to helping out financially when we can, but I don't want to be manipulated or used. I am certainly not prepared to 'buy' my DGC, but I am prepared to pay something to keep them in our lives - most especially my DD, in case this relationship eventually turns sour and she needs support.
Sorry, this has turned out to be long again!