The parent's description above is rape. See for example the Wikipedia page:

> Rape is a type of sexual assault usually involving sexual intercourse or other forms of sexual penetration perpetrated against a person without that person's consent. The act may be carried out by physical force, coercion, abuse of authority or against a person who is incapable of valid consent...

See: ...coercion, abuse of authority...

You don't think that it was rape, but that is part of the problem: people are always trying to redefine "rape" so it doesn't cover this or that particular flavor of it. But if it is sex without consent, it's rape, period.

I reference Wikipedia not because it is an unassailable authority, but because it represents the lowest common denominator of what most people agree on.