All I'm saying is it is possible.
Because besides the Circle, Chantry buildings are where the most Templars are and their job is to watch mages. Wilhelm again is a rare case, Wynne you hear about in Asunder, You never enter the Chantry in Origins, Awakening I'll grant you, and in Kirkwall there is no need since there is a Circle next door in the harbor.
You seemed to be arguing that keeping the child with the mother would somehow reduce the risk of death or health problems.
Yes and if you take out a mortgage on your home and go bet it all on one throw of the dice in Vegas you may get ten times your money. That doesn't mean it's a good idea to depend on such methods.
That part about not entering the chantry in origins is wrong. You enter the chantry in Loathering. You have to go there if you want the key to Sten's cage or to handle a few other little quest. You also enter the chantry in Red Cliff. It's used as it's the strongest building in the village. What do you hear about Wynne in Assunder? Saying you hear things about her doesn't mean she's living in the chantry or sees it as a nice place to hang out.
I did say that staying with the mage mother would reduce the chance of the child dieing from sickness, it's most likely killer if DA is remotely like our dark ages, due to easier access to magic healing, a clean environment, the advantages of breast feeding especially from a well fed mother who's in good health.