It's sexual assault if the defendant can make the case he was implicitly forced to engage in sexual contact or behavior. I bet he could make the case that the power imbalance between him and his boss gave her words an implicit threat.
Legally the definition of rape is a bit strict. In a lot of countries only the one who engages in penetration is a rapist and the one who is penetrated is not.
I'm not a expert though so take that with a grain of salt. Also this is star wars so I don't know the law at all.