Can you please tell me from which source you have found this pointthat sati Devi had met Lord Ram? When Sati Devi has given up her life, she took rebirth as Parvati and became the wife of Lord Shiva.
Lord Shiva after his marriage with Parvati started love making with her for hundred divine years and all the gods started to tremble because none in the world can carry their offspring. They requested God Shiva to discharge the sperm that has stirred up. Further they requested him to practice yogic asceticism along with your consort Goddess Uma in unison with Vedic postulates of Yoga, rather than progeniture, for welfare of the three worlds. Lord Shiva accepted to do so. Gods indicate earth as the taker of the potence that of Lord Shiva that has already stirred up.
As a result Parvati Devi cursed all gods that their wives would become infertile and also she cursed Earth (because she accepted the semen of Lord Shiva on her surface) that she would become wife to many and she shall have no gratification with her (Earth) children because she bigoted against Uma's son. The earth has Naraka, the demon, and Seetha as her children. But these two are not begotten through any seminal contact by earth, and further, for earth it is as good as not having these two as her children, for such is the plight of these two so-called children of earth on earth. After many tumults in her life, even Seetha asks her mother on earth, i.e., mother earth herself, to take her back into her womb. That potence of Lord Shiva is none other than Kaarthikeya or Lord Subrahmanya.
This is mentioned in 36th chapter of Bala Kanda in valmikiramayan.net. From this it is evident that Parvati Devi had become wife to Shiva before Ramayan had started. Then how Sati Devi had met Lord Ram? I am confused.