She needs blood work to reveal her : FSH , LH , TotalTestoterone, E2, DHEA , Prolactin and Progesterone

HRT dose for females are based on her current levels and if shes Pre , Peri or Post Menopausal
HRT is also based on if she has 1 or both ovaries .

Estriol/E3 therapy is the safest of the 3 estrogen types for females but a mix of 70-80% E3 with a 20-30% E2 is OK also.
Progesterone ONLY IN PILL FORM IF NEEDED , not crappy creams that barely get absorbed.
Testosterone can be a cream or injection and id keep it at 5-10mgs weekly if its administered via injection , so her Total Test never exceeds 100ngdl , and preferably roams in the 60-70ngdl of Total Test