Exit unsafe workplace immediately; pursue legal action.

This describes a severe case of sexual harassment, including inappropriate touching and verbal abuse, made worse by a boss who is complicit ("laughs when I'm in distress"). This is an illegal and extremely toxic work environment that poses a direct threat to the user's safety and mental well-being. The "better opportunity" is to leave this job immediately and, as the user is already considering, pursue legal action. The immediate priority is to stop the harassment and remove herself from the unsafe situation. Gathering witness statements and securing camera footage as evidence for police is crucial. Finding any new, safe job, even if temporary or lower paying, is a superior outcome to remaining in this harmful environment.