Ali, no, you did not. Better break the bond of trust than actually phisically hurt a baby! If you ever called any helpline you would know that in case of such intense emotions the main thing is to keep safe. What this lady is saying is that she has had enough. Not a little bit enough, but a lot. She does not mention like there is a lot of help coming from outside sources and in the meantime she needs to gather her own strength. Obviously crying out is not good for the child, but sometimes it is a case of picking the least bad.
If this means that somehow I abandoned all BW principles in the eyes of everyone, than so be it.
In the meantime the medical help is needed for reflux or whatever else.
If it is a separation anxiety, I would have imagined the child to be calming down when the mum is there. But he is not. My DD had SA and she was fine provided she slept in my arms and was carried everywhere. Still cranky at times but mostly fine if I did those things. Avery seems to say that even then the child is not settled.
As for the night times, obviously getting a nanny would have been better, or a night nanny like I did for my second LO. I stil woke up for feeds and for my first but I did not have to do the shushbpat on those days. But if she can't and needs to still be concious enough during the days and nights then I really think some ideas need adjusting.