Their heart rates would be increased because of physical activity?
Trust you as a practitioner, be open and honest about their emotional and physical well being, have faith in you and know that they are in a safe environment, confide in you anything they do not want their families, friends, partners to know about but which is important to their well being and the baby's.
She needs to control her diet. This helps because it makes her healthier, and less sugar will decrease her risk.
She also needs to exercise daily to keep herself healthy