I see a lot to connect Copper and Andraste.
1. Redheads.
2. Orphans.
3. Related ideals (Freedom vs Footloose & Fancy Free)
4. Spellcasting without training/schooling.
5. Roguish interests (slight-of-hand/pickpocketing, stealth).
6. A taste for excitement ("Life is what you make it, so make it exciting!" vs. "I like a little more excitement in my life than most people would prefer.").
Despite the four year age difference, I can see these two hanging out and getting into trouble together at the Academy. What do you think? How do you see their relationship having developed during the school year? What connections or roadblocks do you see?