The drama is not forced, she is afraid of dating her, not of breaking the rule.
She is afraid that their relationship wouldnt be able to survive the real World, she Hayes her Day job and their current feelings are being assisted by Them only meeting in arrificially more intimite situations. Additionally they cant just test it out because if they start dating kaboyashi Will be blacklisted so there is No security/rebound, she would have to quit her job to date her.