Dragonfall

Why these tropes fit

In the finale of a five-book dragon-rider academy saga, a heroine leads a desperate rescue-and-witnessing quest into a fracturing mountain where compressed centuries of grief have twisted the dead into wraiths. Surrounded by a found family of four devoted, "touch her and die" Elderwyrm-bonded heroes whose slow-burn tension finally ignites under siege, she dissolves herself to carry every lost name and break a two-century conspiracy wide open, sacrificing everything to deliver the dead home and claim her guaranteed happily-ever-after.

Evidence from the source

• Dragon Romance: “Dragon rider academies with ancient power and buried civilizations” source
• Found Family: “Found family holding the line against an army and a deadline” source
• Magic Academy: “Dragonfall Academy series” source
• Quest: “a desperate underground quest through ancient grief” source
• Slow Burn: “Slow burn payoff-five books of tension that ignites in the finale” source
• Strong Heroine: “A strong FMC who sacrificed everything and came back carrying the dead” source
• Touch Her and Die: “"Touch her and die"-four Elderwyrms and a mountain that remembers” source
• Why Choose: “scorching fantasy why choose romance and the explosive finale of the Dragonfall Academy series” source
• Sacrifice: “I had to dissolve. Release my name. My body. My self.” source

Metadata source: Google Books. Quotes are used only to verify the tags.