Sadly none of these are very new, so you may have read them all.
Arguably The Insectivore (http://archiveofourown.org/works/584754), which is a Pullman's His Dark Materials AU of the first Thor movie and surrounding events from [edit: numerous POVs, it turns out, including Darcy's], by antistar_e. Darcy&Thor as friends is one facet of it, rather than the focus, but there's some in there.
verity's halfway between the gutter and the stars (http://archiveofourown.org/works/2193378) has some of this, though again it's not the focus.
And I've done one story with that as a focus, Darcy Lewis vs. the Christmas Cat (http://archiveofourown.org/works/2849222), and one where it's an angle, which is It's Time to Light the Lights (http://archiveofourown.org/works/2679713).
...and wow there's not a lot in this category which is weird.
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Arguably The Insectivore (http://archiveofourown.org/works/584754), which is a Pullman's His Dark Materials AU of the first Thor movie and surrounding events from [edit: numerous POVs, it turns out, including Darcy's], by antistar_e. Darcy&Thor as friends is one facet of it, rather than the focus, but there's some in there.
verity's halfway between the gutter and the stars (http://archiveofourown.org/works/2193378) has some of this, though again it's not the focus.
And I've done one story with that as a focus, Darcy Lewis vs. the Christmas Cat (http://archiveofourown.org/works/2849222), and one where it's an angle, which is It's Time to Light the Lights (http://archiveofourown.org/works/2679713).
...and wow there's not a lot in this category which is weird.