Sydney Marquez last seen CCTV Footage, Someone familiar is following her(DISTURBING)

Sydney Marquez has been reported missing after traveling from El Paso to Houston to meet a friend. Family members say she has since disappeared and has not been heard from. According to her family, Sydney has been diagnosed with bipolar disorder and is currently unmedicated. She reportedly left behind her phones, clothing, and makeup, and her vehicle was found abandoned in the Chinatown/Bellaire area of Houston. The family is extremely concerned after receiving information that Sydney may have last been seen at a bus stop, partially unclothed. Relatives have traveled from El Paso to Houston to search for her and are asking for assistance in locating her.  I’m attaching other pictures because she does not look the same as she did on her license picture. abandoned vehicle with the key still in the ignition was found blocking the right lane of eastbound Bellaire at Ranchester around 11 PM Thursday. The car was later towed just after midnight.