How does kissing burst a person's ear drum?
"The kiss reduced pressure in the mouth, pulled the eardrum out and caused the breakdown of the ear"


All you really need to understand the mechanism given this statement is anatomy: the nasal cavity and ears are connected through the https://en.wikipedia.org/wiki/Eustachian_tube so pressure changes in the mouth can be communicated to the ears. A typical individual would experience this when having the ears 'pop' in response to changes in outside pressure due to elevation or swimming underwater.


  is there any kind of anatomical disposition that would make the woman more susceptible to this happening


Although I have not conducted a survey with a sufficient sample size, I don't believe most peoples' passionate kissing involves forming a mouth-to-mouth seal and then sucking/inhaling forcefully to create enough of a vacuum to damage someones' eardrum. It seems that the anatomical disposition most likely to make a woman or man more susceptible to this happening is having a kissing partner with this unorthodox approach. As commenter @kmm points out, you would also need to seal the nose, so having a partner who plugs your nose during kissing or having nasal congestion would also be necessary.

With 7 billion+ humans, though, there is a large enough sample that statistically rare events occur all the time, in part because there is also a near-infinite set of possible rare events.