Not so sure about the superstitious stuffs as I don't really
follow that. Anyway, the following website might give helpful
info about what to eat etc.
http://www.essentialbaby.com.au/
Your friend needs more iron, calcium, folate but it shouldn't
give her more excuse to eat double the amount of food she usually
eats.
Fish is generally good but don't have it too often due to the
mercury level in fish.
As for cheeses, hard cheese is ok but do avoid soft
cheese. No sashimi (raw) either as they have high chances of
giving you food poisoning which might affect the child.
that's very nice of you.will take note of that! tyvm.