telling her afterward sounds like a retarded plan to me,
telling her that during foreplay and stopping when she is horny, that might help you progress, because she is most likely to re-initiate and you are playing the part of the resistor, this might make her feel more sexually secure (makes her not associate herself as the resistor to the escalation but rather the person doing the escalating) but tbh, if you do this too much you risk her agreeing, and thus the foreplay ends, all in all it is best to keep this kind of thing to a minimum if you are going to add it to your game do it maybe once or twice if you are going to do it, sort of reminds me of a take-away, get her to a high point then remove yourself to make her realize how much she values you,
here read this post
lmr-again-vt96883.html
more or less dealing with LMR is explained