She has been around in lore for over thirty years. So many artists over so many years ...
Hence her apearance IS all over the place.
For me she is:
https://static.wikia.nocookie.net/f...ee.jpg/revision/latest?cb=20210531061740but other are just as valid. Also, she FEMALE, so she can look one way on Monday and another on a Tuesday, as
that look is OLD!
IMO you have lots of leeway. I'd even go with Strong Body Type, as among Drow girls are BBW, bigger than boys.
Then again, to spurn Mum and the Traditional Look, she could deliberately be petite :P
IMO - after reading what Good People here have written - War Domain (BG3 Wiki also suggests Light and Life for her) followed by Sword Bard is closest to her lore, but YMMV (and is just as valid as mine).