Roe Female Dragoon Immortal Flames Rp advice

Sorry for long message but I love some advice. So my Roe is a dragoon and I feel in love with the immortal flames. I love the cool glamour and weapons but she is a dragoon who prays to Halone. I’m currently working on a rogue/ninja and thinking of paladin or warrior along with summoner/scholar. The problem is I don’t know how to come up with a good story to tie this awesome character. I know this doesn’t mean anything playing wise but I love to pretend my character has a story to have fun in game. If you all have any suggestions or advice for a background idea I love to hear it. She is a sea wolf roe if this helps.