Goddess Gabriella needed to teach this loser to do things that she wanted and how she wanted them. That is why she used her spit fetish to dominate as well as humiliate him. She instructed him on how to do it but he did not do it as she wanted. She watched him as he struggled to lick and swallow her spit. When he did not do it as well as she wanted, she had to force him to do it.
Mistress Scarlet and goddess Gabriella had given this guy their requests which they expected to be honored as per their earlier conversation and agreement. But he declined their requests and as such, they had to take matters into their own hands. That is how he found himself being forced to lick their feet as well as their spit. He did not see it coming and he was degraded like never before.
Goddess Gabriella was not ok with this guy wanting to seduce her. She felt that he was not in her league and that is why she had to punish him. The reason was so that he would not bother her again. She had tried to make him stop by ignoring him but it did not work. So she had him lick her saliva and the humiliation did the trick. He did not bother her after that.
Goddess Gabriella needed to dominate this guy because she felt that he was too dumb for her. She did this by forcing him to lick her spit and to smear it on his face. She did not care what he felt and she was sure that by the time she was done with him, he would do everything in his power to improve his knowledge and stop being a dumb person.