It was also established at the same time that literally no one other than Su Luxia and Bamboo Rat can see or feel the necklace, including the person wearing it, so no one would know to take it away.
Anyway my gripe is with the misconception that being diagnosed with mental illness gets you out...
Thank you for the update!
I mean, that's not why she doesn't want to date him though. She's very clear from chapter 1 that she doesn't want to date him because he's a steaming hot mess of walking red flags, even without her fear that she'll be forced to quit her job if she gets married.