So, for the points you made.
She’s a loli because of literal medical reasons that are beyond her control. So that much is true, kinda.
She is OP in a sense. She can’t kill bosses for shit, but she can kill most anything else.
She has far more depth than any Awakening character. Most anything in 3H has more depth than Awakening, Fates or any old FE. Its hard to compare the amount of character depth, from her traumatic experience, fear of dead things (look at first point), and obsession with sweets mostly cause her lifespan is so ■■■■■■■ short that she just lives for what she believes in without a single fiddle given.
As for Darkspikes. That’s the least of her spells. She has access to one of the best relics with matching crest. She’s nutty. I think at Gremory she has a maximum of 10 range on dark magic, but I could be wrong.
I wouldn’t call her loli bait. She’s no Nyx, nor is she Elise, Sakura, or Nowi. She actually grows a bit during the timeskip, and I don’t think its weird to like a girl that’s 5 feet ish. That’s a rather normal height for people (Hell my mom is 5’4 and my Dad is 6’2).
Overall, you got the gameplay part right. But in regards to her character growth and the loli bait bit, I’d be inclined to disagree. Especially with the whole Awakening depth. As the Awakening expert here (I assume since I know all the freaking lore of that game and its prequels), that game pales in comparison even with all of its hints and tidbits to 3H. And 3H has flaws of its own that Awakening still sucks at.Hell, even freaking Leonie and Cyril have growth, and that’s impossible to believe.