>>725You need to set some goals and lay a battle plan based on this.
Do you want her to watch you jerk off, help out by giving you a handjob, or something more?
I'm guessing the outcome will depend a lot on your parents relationship though – if it's rocky and sex-less, you'll probably have a much bigger chance of succeeding.
Also, if she likes strapping young men in uniform be sure to wear it, maybe send her a pic of you in it.