Its not a problem with her vagina, she has admitted in the past to having a boyfriend with a massive cock, which she freely admits that she could take and enjoyed. Its just that she has a gagging reflex and finds it very difficult even to get the head of my cock in her mouth. We love oral sex but it puts a bit of a downer when she can only suck on the head. Although in a strange way it is very good for the ego when she keeps saying your too big. Even better when she complains to her friends about my size
You put a lot of what I was going to. Mine can take me as long as I "warm her up" plenty. Oral is another story. I love it, but my girth hinders it a lot. It is a huge turn on listening to the complaints about it being to big like you said. Also, as you said, it's a major turn on when she tells her friends about the problem.