Sorry you haven't had the replies you expected -yet. This is first I've been on this evening.
From what I know, no agency is eager to take children out of a safe, loving, environment to place into a stranger's care. What do you think will happen if you don't seek help NOW? Depression doesn't necessarily ease by itself, if you don't know how to help yourself, then your depression might deepen in the future. Why not seek help now?
You posted in PTSD but talk about depression.... do you also suffer with PTSD?
Welcome to PC, btw! TC