The dawn of the betrayed

Frida aggreed to go into battle alongside her eldest sister and father to avenge her late brothers grusome death. Many higher power english man knew what she was capable of when she had reasoning and them being the cause of her brothers death? It was a really good one. What urgent problem could the prince have to be set on to betray his father and attempt to have the second in comand of the Viking army betray her people. But how could she deny him when he was able to throw away his future just to work with her? Work with the girl on the opposing side of the rivalry that had been going on for centuries? How fast could she realize that she'd been betrayed... not by the prince- but by her people, her father. Maybe working alongside the prince for a little while won't hurt. Especially with the promise that her brother would be avenged in return.