MAPCO review: rude employee

This afternoon I went into the store purchase gas and lottery tickets. I tried to purchase the lottery ticket first, and handed the ticket to the cashier over a sign on the counter. She snapped at me and said, "I'm not reaching over all that." I thought that it was so rude that I responded with, I'm sorry. I didn't mean to inconvenience you." I purchased the tickets and walked out of the store without getting any gas. She is always very unpleasant when I go to the store (which is about daily to buy lottery tickets). When I see her at the register, my whole demeaner changes because I know she is going to be nasty. I don't know her name, but she's a heavyset blonde white woman. I don't know if she treats me rudely because I'm elderly or because I'm Black, but she is never pleasant. All the other cashiers are friendly and kind. She's the only one that I've encountered in the store who is not.