That implies that she was capable of multiple fucks simultaneously, and as anyone who's attempted such would tell you: that ain't happening. Only one fuck at a time, and all others are bonus; though the current fuck at any given moment could very well cycle throughout the options, it's a matter of focused attention.
That's not an answer, that merely denotes multiple fucks not multiple simultaneous fucks. And that's without we get to the sticky topic of multiple penetration, if someone is fucking an orifice and someone is fucking a different orifice is the owner of the orifices having a single fuck or a double fuck? What about the penetrators, are they necessarily sharing the same fuck or merely sharing a fuckstress?
Your own semantic challenges are not proof of any confusion within the linguistic system itself, and while I can understand the allure of conjuring lurid imagery, this query now edges toward masturbatory and I'll leave you to it.