Her Cholesterol can be controlled by life style measures , repeat test after 12 weeks.
Avoid fatty, sugary food, give her more fresh green vegetables, fruits, whole grains, fortified cereals, milk, curd, cheese, eggs.
She should do some regular exercise.
For
thyroid, please share what she is taking and how long, what is her current thyroid status?.Then I can guide you.
For vit D- Give her tab vit d3 60,000 units once weekly for 6 to 8 weeks.