I have been thinking on this and before I would go forward I would want a knowledgeable person walk me through it. My very first thoughts are to cause no pain or danger on another person.
Just like my golden shower experience preparation is needed before hand.
This is something I indulge in . Building the trust between my self and the other party is very important to me. If you do not have the experience of receiving this from a professional, DO NOT ATTEMPT IT. IT IS QUITE DANGEROUS. I have been to many many play parties , where this is not allowed, with good reason. Like anything else moderation is key. If she wants to be choked and neither of you have experience , try sitting in an upright position, extend your thumb out ward as far as you can allow her to cradle her throat into the crook of your hand let her lean into your hand. If you feel comfortable just cradle her throat, do not need to apply any pressure, sometimes just cradling it will do.