I guess Mr.Jet wanted to make Selina as slutty as her mom so the MC can have fun with both of them at the same time. But then ppl started liking the cute redhead so he completely changed her character like Philly did with Chandra. No "shy" and "inexperienced" girl acts like she did with a random dude like the MC, the first scenes with her are proof of that. She's an exhibitionist and she really likes the rough treatment, but don't matter the girl is still shy and innocent. Plot armor bois.
Selina stopped talking to Karen, her friend just bcz she flirted with a doc even tho Karen asked the lil skank if she was interested in him.
She's a beautiful girl, but her character is inconsistent. At least her mom goes full horny cougar, but Selina's "innocent" and jealous personality is fanservice.
Ragnar she's no sex deviant like those sluts in fem. prot games are, but she's no innocent or shy girl either if she jerks off the MC with her feet under the table while Rosa is next to her and then fucks him in the bathroom tho they hardly know each other. Let's say she's a smart and beautiful girl having fun and being kinky with her future BF.