@Ionus,
You seem to be erroneously confusing the "women's movement" with the feelings of most women about the crime of rape. Most women want to prevent the crime of rape and see rapists held accountable for their actions. Most men want that too. This is not a concern which is exclusive to the "women's movement".
Quote:Does it really require the same word as a violent sexual assault by a stranger ?
Yes, "rape" is a sex act committed without consent.
It makes no difference whether the rape is violent or not or whether it was committed by a stranger, a relative, an acquaintance, or a date. The law defines non consensual sex as rape.
There are, however, different degrees of punishment for different types of rapes because differences in the circumstances of rapes result in different classes of felony charges.
In statutory rape, the crime is considered "rape" because the victim of the crime is too young to give legal consent, so it is legally non consensual sex. In the case in question, with a 14 year old girl, the statutory rape charge would have carried a maximum possible sentence of four years. If the rape of that girl had also been forcible, a possible sentence could have been considerably longer than four years.