Oooh, catfight! Haha. Tiana wouldn't like anything about Merida. She'd see her as an utterly selfish, lazy spoiled brat who shows no respect or loyalty at all to her family, at least her mom, who Tiana would probably respect much more. Merida in turn would think Tiana is the most boring person who doesn't know how to have fun and is too bossy. it would almost be like having a young female Naveen around in Tiana's point of view. they have nothing in common and have totally different priorities.