Cassandra is wearing her converse shoes which she had been walking with the whole day. Her feet were sweaty and stinking, so she called her slave to come and lick her feet and remove all the sweat and bad smell
Giselle and Jenna are pretty mistresses who like using their looks to trap guys and then humiliate them. They lured this guy with promise of sex and then ended up trampling him with their bare feet
When Cassandra goes into her home office, she doesn't come out until hours later. She is happy to have her foot slave meet her at the door and tend to her feet. She is happy to put her feet in his face and grant him permission to remove them. She knows that he will take her socks off after sniffing them and he will beg for permission to lick and suck her feet. She grants it and tells him all about her day.