[Yeti]

The boy takes his time to stop and that constitutes rape?

Changes the definition of rape from "forcible insertion of the penis" to "failure to remove a penis with suffucient rapidity after being given a hint."

[going hot]

Has anybody addressed the question as to how long they were going at it prior to her telling him she must go? Five minutes,? Ten? twenty?

If it was just a few moments, then she may have a stronger case. The longer they were going at it prior to the fateful statement, the less strength the statement carries.