Stardew Valley mods allowing marriage with Jas are generally unavailable and against community standards, often removed from major platforms. Instead, the community focuses on adoption-themed, character-expansion, or family-immersion mods like The Ranch Expansion - Marnie and Jas
Time has passed. You’ve been away from Pelican Town for years. When you return, you find a very different Valley. Marnie’s ranch is quieter. Shane has finally found stability. And Jas? She’s now a young woman – sharp, poetic, quietly fierce, and carrying the weight of a childhood she never complained about. stardew valley jas marriage mod top
There have been specific "Jas Marriage Mods" that allowed the child version of the character to be a spouse, but these are largely delisted or banned from major platforms. Stardew Valley mods allowing marriage with Jas are