Cummed in stepsister's panties, after sniffing and her

I love to look in my stepsister's closet. You can find a lot of interesting things there. For example, her worn-out panties. I love to smell them and get excited by their smell. But today she came back earlier and noticed me! What should I do now? I will fuck her hard and cum in her panties, so she will definitely forgive me.