Missing person: Mei Chen, 12, blue windbreaker

I lost my 12-year-old sister, Mei Chen, yesterday around 6:20pm near the corner of Main Street and West 4th in downtown Waterloo. She was wearing a blue windbreaker with a small panda patch on the sleeve, dark jeans, and white sneakers, and she has shoulder-length black hair. She also wears a silver heart-shaped necklace that she never takes off. I'm really worried—it's a busy area and crowds can be overwhelming, and she tends to wander off when unsure of directions. If anyone spots her, please text me right away; she has sentimental value to our family and we just want her home.