Cloggie
My DN had her DS 1.5 years ago she is 19.
She took to motherhood well at first but then after a few knockbacks things took a change for the worse and she didnt even want to look at her DS.
She has been very depressed and described medication but TBH this made the situation worse as she pushed the baby away even more - the doctor has now prescribed a herbal tablet and she is slowly getting back to her old self but finds it really hard having to cope with "growing up" herself and looking after a child.
I think watching your friends get on with life, getting a career, learning to drive etc has been very difficult but she is beginning to realise now that she can have these things too.
Does your daughter have any local support - young mum's club or similar (I know my DN found this helpful)as she could speak to young girls in the same position as her and they would regularly go on trips with the babies
your DD is very lucky that she has you and that you are very supportive.
I understand what you are saying about having the child too much and getting between them - my Dsis has often wondered that herself but at the end of the day you are her mum and will do whatever you have to do to support her and if she needs help caring for the baby then that is what you have to do.
I really wish you well with them both for the future - I really do know what a difficult position you are in at the moment.