Is there any way to tell my wife with post party's anxiety that I don't think she is fit to care for our children right now?

Here is our situation: we have a 3 year old, a 1 year old, and we also adopted a teenager in the first year after our youngest was born. We didn't expect it, but she developed post part in anxiety during this first year. Debilitating in the, no getting out of bed, suicidal ideations way.She started seeing a counselor and is on meds, we also figured out that sending her back out to work helped a lot.But she is still constantly struggling with the kids. After any real period of time with either kid leads to her screaming at them and completely frustrated, all the kids crying. She can't care for them in the morning because she needs constant sleep. She can't do bed time with them. She can't handle any amount of crying from our youngest without withdrawing.I don't really know what to do. Today I stayed home from work sick so she slept in instead of waking up when I would normally leave for work and because I was home I needed to get the kids up and ready (which is the the thing I already do when I'm home). But after she got up I got in bed and I'm just listening to her screaming at the kids for such ordinary things. She's not the same person with post part in anxiety.What do I do? Sorry for any typos in this. I am writing this from my phone under a sleeping baby. via /r/Parenting http://ift.tt/2aslVib