If she doesn't want to go down on you it's maybe because
she's afraid of getting a mouthful of semen. Some may find
this a little gross.

In the spirit of play get a couple of pairs of edible undies
and eat them off her. Get a pack of flavoured condoms in
in her favourite flavour and see how she reacts. She'll
feel safe from the icky bits and more likely to get into it.

It's a shared joy, not one person's expectations.

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Calm, quiet, smooth, devastating