A sudden fear gripped Alec for a moment, but he forced himself to calm down. According to the movie story, the woman only took out her shotgun when she noticed that Alec was becoming suspicious.
As for that old man... Alec took the sweets with a smile and pocketed them. There was no way he was consuming it, but he kept it anyway. The old woman was still counting the money on the counter, pretending to find it difficult to not see the change.
After a while, Alec lost interest and walked around the shop, while keeping a close eye on the duo. As Alec was pretending to examine the product, the old man left the counter and headed to the back of the shop.
Then, Alec heard a car approach the filling station. It was a pink family car with the typical saloon design. Alec made sure to hold his gun still pocketed and crouched on the floor. He looked around and found a hole among the shelves.