It is ok that you have an attraction to high heels and keds. As your sister, I will help satisfy your needs even if your girlfriend cannot. There is no need to be embarrassed for having these kinks.
Why don’t we start with a little tease with my high heels while I strip out of these pesky clothes. I am getting so turned on by this and it looks like you are too. Why don’t you take the shoes off of me and put the keds on? You can smell them because I know how much you like that.
There is a surprise for you! I bought you a pair of keds and you can put them on too! I love seeing how vulnerable you are by sharing this with me and want to reward you.
Come play with me (POV) while we 69 and I wrap my legs around you. Do you feel the rubber bottoms of the sneakers digging into you? Oh that feels so good and I cannot hold back my orgasm!
Some things are just meant to be kept in the family.