Her armour does look nice. I confused it for a breastplate at first until I looked at its stats.
Shes not that charismatic but quite deceptive (or rather thats the vibe that im getting from her) and her voicelines and class specialisagion should focus on stealth.
Give more dex and lower her cha. Dont recall the stats but I think I saw someone here say she has 14 cha and 9 dex? If thats ttue just swapping those 2 stat lines could fix her stats to be line with the character.