The most glaring is the prohibition of having a bath and washing the hair. It is illogical not to put hygiene as top priority. Keeping one’s body clean through regular shower is more likely to contribute to quick recovery.
The other one would be the avoidance of fruits or vegetables. These foods are a good source of vitamins and fibres which would help ensure good bowel habits and faster recovery.
Eating internal organs or seafoods are fine if well cooked. For that matter, foods that are raw should not be consumed during pregnancy and confinement for fear of contracting nasty bacteria such as listeriosis or salmonella (leading to food poisoning).
Travelling long distance in the car is fine, provided she takes plenty of breaks in between. In general, carrying heavy objects less than 10kg is acceptable.
Apart from this, carrying out any activities or taking any foods in moderation should not be an issue.