Missing Jack Russell

I have recently last my dog last night at approximately 23:20 hrs outside Spar shop at Artane Roundabout North Dublin. She wears an Angol United Kingdom dog leash with dark brown love heart shaped markings on the top of her coat and is six years old. I was at Artane Roundabout Spar shop to buy some food. My dog usually stays behind me at all times but last night she disappeared when I exited Spar. I am extremely worried about her. I have attached some photos of my dog. Snowball is her name. My contact number is 0858230370