Lore-friendly playstyle/itemization for Shadowheart? (Acts 1 & 2) - eviltoast

The Shar-worshipping crazy goth chick is a great character concept. Trouble is, the game seems to throw a lot of great light-related cleric spells and equipment at us, and all the alternatives seem to be bad. From an RP point of view, Shadowheart obviously shouldn’t be wielding a light-emitting mace, wearing radiance armor, and shooting Faerie Fire and Guiding Bolt all over the place. But I can’t find a lore-friendly playstyle that isn’t substantially worse in fights.

Some of the Shar-related equipment, and the Trickery domain subclass perks, seem to point to some sort of melee cleric build exploiting darkness. But the overall effect seems subpar; for starters, clerics can’t cast Darkness, so another party member would need to supply that, which is clunky.

Any suggestions?