This is close to home for me.
I had DS2 a year ago while I was on medication for my MH conditions. I was very well supported throughout.
I stayed in hospital for 48hrs to make sure that DS2 didn't have any difficulties and was feeding well.
I swung to and fro on whether to BF right up to the point that he was placed on my chest after birth and rooted for the nipple. I knew then that the right choice for us both was the BF. Judge if you like.
Not all medication passes through into breastmilk and we don't know what this lady was on, if she was advised to come off it, or the opposite, or decided to stop taking her meds herself without telling anyone.
I was advised to not stop my meds (baby needs a healthy mum) but throat support however ilthey could if I did, and the BF choice was totally down to me.
We have absolutely no idea of the circumstances here, and I have to say some of the speculation people have been engaging in on this thread has been a bit 
I'm thinking in particular of all the 'maybe she's fleeing DV / the family and friends might have been deceived by the boyfriend' stuff earlier on which was pretty disgusting tbh.
This is a truly tragic situation which is still unfolding.
Please think before you post.