Welcome to HCM,
This is good news that she is pregnant and under care of Gynecologist.
If there are no major vomiting , it is good to take very good diet of protein,carbohydrate
and fats with fresh fruits and green vegetable.
You must understand some supplements required in even normal pregnancy
, as dubagest which help to carry pregnancy avoids miscarriages.
helps in preventing neural tube defect
in the fetus
Some amino acid
and vitamin and calcium and Iron supplement is also required and prescribed.
One precaution that calcium can interfere with absorption of Iron so they can be taken at different time morning and evening.
Wish you a safe motherhood.