@FerretPants
I think this is a very tough position to be in and i don’t think you are being unreasonable in the slightest to be very cautious. It would be extremely irresponsible- to you, your family and to this baby- to rush into blindly based on emotion alone.
I would say having both professional and (indirect) personal experience of a not dis-similar situation (which I won’t go into) I would be very cautious.
Firstly, yiu have to consider whether you have the physical, emotional and financial resources to take over the care of a baby. And you need to consider the future too, not just the here and now. How will this affect your retirement plans, for instance? How you will you cope when the baby is teenager and you are heading to 70+ (based on the fact your DB is mid-60’s I;m guessing you are mid-50’s or older)?
secondly, you need to consider the impact on your children- this will be a big disruption to their lives- if your eldest is of to uni this year, he may well be sitting very important exams in the next few months- how is that going to work with a newborn in the house? Your younger son is also coming up to a crucial time- can you give him the support he needs, as well as coping with a young baby? It’s important to take your son’s views into account, but I think it would be wide to bear in mind that they may not really understand the impact on them, and also that they may not want to say “no” for fear of seeming selfish.
I don’t know the nature of your nieces’ GDD, and it may not be hereditary at all, but if it likely/there is a higher than average possibility that this baby could have additional needs then that is a further consideration you need to take into consideration. Especially as you wouLd be older carers. I’m not trying to be disablist, but if you are older trying to care for a child/young person with additional needs there are additional challenges for many.
I would also caution with regard to social services and whatever promises they make re support if you do take on kinship caring role- you should be prepared to manage without whatever support they offer. The experience of the family I alluded to earlier would strongly suggest that this is not be relied upon. They were promised all sort of support, which either never materialised or was not maintained consistently. I am not sure if they were deliberately over-promised to help persuade them to take on the children, or whether the promised were made with sincerity but then cuts/lack of resources etc meant those commitments could not be honoured. Either way, the majority of support they were offered initially was not followed through on. It was really difficult, and trying to get answers/things done was very hard work. I’m not getting at social workers btw- I think most are massively overstretched, the departments are under-resourced etc- merely stating the promised support was not provided, the excuses for this were many and varied- I suspect a combination of deliberate/“aspirational” (being generous) support plans and genuine issues with providing it because of staffing/financial constraints outwith an individual social workers control. This couple are aware that they are not unique in terms of their experience of social work support being suboptimal to nonexistent. So by all means, go and ask questions of social work regarding kinship caring for your nieces baby, but I think you need to take whatever they promise with a pinch of salt.
In your position, I would not agree to take on the baby, family or not. I understand the desire to help given the very tough situation your neice (and your DB) find themselves in, but I think it will be a hard road to tread for you and your family, and it seems better all round if the baby could be adopted. Only take it on if you are 100% sure you can cope. I know I could not.