So we all know the story of how Zeus rose up against the Titans rebelled killed his father and took his place. After these events you don't hear much from Zeus's mother Rhea. The only thing I read was that she remained prominent. Are their any stories she was involved in after the Olympians took over or does she just fade into the background?
I'm quite late but it depends on versions, and there isn't a definitive answer. She assumed the role of a mentor to her daughter, Demeter, and trained her in agriculture. She also tried to convince Demeter to let Persephone marry Hades. Rhea was also raped by her son Zeus when she complained about Zeus' constant infidelity and how it made Hera sad.
In Orphic versions of Greek mythology, Rhea was a lot more important. She held a lot of power even after the titanomachy. In Orphic myths, Zeus married his mother Rhea and Rhea gave birth to Persephone.