My first baby was born in Japan, thankfully I delivered him on a military base, but I had several local national friends who described their birthing experiences to me.
It is common in Japan to keep moms in the hospital for up to a week after birth to allow time to recover, and the baby's are in the nursery basically all of the time, brought to mom only to be fed every few hours. But of course babies tend to cry, so the nurseries usually supplement. It is seen as just the "norm", at least at the hospitals where I was.

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Also, since milk doesn't come in right away, they supplement until mom is actually producing milk. When I told a friend that I never gave my son a drop of formula, she was shocked, truly thought he would starve in those first few days if not for formula.
There also is a big concern among Japanese women about the quality of their breastmilk, and many women will supplement with a bottle of formula after a feeding at the breast just because they are nervous the baby isn't getting enough.
Really, the whole culture behind breastfeeding was very disturbing to me. Nearly every woman there initiates breastfeeding, but also nearly every one supplemented to some extent, and extended nursing was definitely not the norm, I had several friends tell me their husbands told them when to stop nursing.

SO...this is what she may be up against. If she isn't willing to stand up for herself (which would take a LOT, because the rules and expectations in the medical community there are just different than here, I'm not even sure there is such a thing as AMA, I mean they wouldn't take her baby from her or anything, but she would certainly face a lot of polite opposition), then honestly the best thing you can do for her is hook her up with LLL so she can get baby on the breast full time when she's released from the hospital.

There are good things about the birthing community, they are very pro vaginal birth, have very low c-section rates, and the island I lived on (Okinawa) did not offer epidurals to moms delivering vaginally at any hospital except one. And there was only one hospital that did circumcisions. So it's not all bad...