Valentina's rise to fame began when she started sharing her adventures on social media platforms. Her fearless attitude, infectious enthusiasm, and captivating storytelling quickly resonated with a wide audience, attracting thousands of followers and fans. It was during this period that she adopted the moniker "Mommy4k," a playful reference to her love of high-octane activities and her role as a devoted mother.

Despite her daredevil persona, Valentina Sierra is also a devoted mother and partner. She has been open about the challenges of balancing her adventurous lifestyle with family responsibilities, often incorporating her loved ones into her sports and activities.