Oh...I don't think she likes it when I go near that rock...
Did you just assume their gender????? /joke
(But really, it's never established on what is their gender, people just claim they're female because the name is shared with a Norse goddess, which is kinda dumb because the goddess has nothing in common with the Great Wolf in theme so it probably isn't a reference and that the name "Sif/Seph/Cyph/however you want to spell it when appropriating from Japanese spelling" is really not such a hard name to come up with anyway so it may be entirely coincidental. Also, Artorias's girlfriend is named or at least appropriated to Ciaran, which is a male given name in our world; so apply the same logic to Sif as well.)