C.R.
I wanted to edit my response- a watch and wait approach may be best as suggested by others or I think talking to the baby's social worker is a good idea. If you could 'babysit' the older one that would be helpful. If you are the only lifeline available to the child at this time, it's important that you not get 'squeezed out' of their lives which could happen if the mother develops more hostility towards 'outsiders'. My heart has been breaking all day since reading your letter. God bless you and the children.