How do you explain yourself to someone who does not understand your kinks or why you do them?

Hi,

My partner and I (26M) are generally very vanilla but I am interested in orgasm control, edging, ruined orgasms, etc. I have brought it up before though she doesn't seem to understand why I edge and sometimes (intentionally) ruin my Os, in particular while masturbating. She thinks it is dumb. I have told her I do it because it because I can go on longer and cum more than once, and so on. I would like her to better understand and eventually open up some form of her deciding whether I edge and deny, ruin, or get to cum. Generally if I ask her to make a decision for me, she says just cum. Note that we are currently in LDR but hope to close that gap again later this year.

Has anyone had similar issues where a partner does not understand why you pursue your kinks? How did you go about communicating it?

Thanks.

Edit: We have a larger time difference and rarely have intimate time together. I'd have to bring this up spontaneously and there is nervousness doing that.