TL;DR: Disabled all of my mods worked for me!
I just moved my Mods folder elsewhere, started KCD with no mods, loaded my save (BEFORE telling Sir Hans that I sneaked his necklace into Karolina’s trunk and therefore BEFORE accepting “Honeyed Words”), then accepted the quest and it didn’t failed instantly, hooray! After that, I just re-saved and quitted the game. Moved my mods folder back again, load and thankfully nothing broke. Afterwards I finished the game with no issues whatsoever. Hope this helps someone in the future.
MyModlist:
A_Sorted_Inventory
AlternateFoodSpoil
BetterVanillaHUD
Bushes.Only_Collision.Remover
Durable_Armors_Weapons-x5
EasyToSeeHerbs
EqualCaparisons
First-person_Herb_Picking
GlowingFeathers-WHITE
IncreasedHerbGatheringRadius
Instant_Herb_Picking
JCD_LootInfo
less_intrusive_map_icons
Lighter_Herbs
MoreArtworkLoadingScreens
MoreFunctionsforMRB
MotionSicknessBeGone
No_Arrow_Trails
optimized_graphic_presets
Perkaholic
SectorialLockpicking
Skip_Intro
StayCleanLongerGetDirtyGradually
the_master_pickpocket
Time-HD
UltimateRealismOverhaul
WashingDeluxe-NoLimit_Items
zzz_faithlv_minimalhud_v2
zzzz_JCD_CLAM