@KingRagnarok150
While this is pretty late, to answer your question, elana's father is the prime minister, essentially a man who is second only to the king in power, the actions of the prince essentially get's his daughter thrown out of the country and potentially robs him of ever seeing his daughter again while hurting her emotionally, the prime minister is also the only person on his own that poses a threat to a king in most forms of monarchy, take england for example, many people outside of the uk do not know this, but the crown was for a short period of a few years overthrown by the senate and the king at the time executed.
Basically the prince made a enemy of the one person that could destroy the royal family's hold on power, this isn't even getting into the fact that the "guardian dragon" is a big red flag that the prince seriously screwed up most likely, with either elana or the MC probably having some form of divine protection, 2 people they just kicked out of the country.