Exactly my thoughts yeah, also i do think she’s this way because she isn’t like her mom who’s good with the violin, so she makes up with her knowledge with musical art to maybe say like “i may not be good with musical instruments like you, but look mom! I know a lot about music!”
Buuutt since Chowon isn’t really good at vocalizing his true feelings and is usually very blunt, Bin thinks her mom doesn’t favor her

I know that she's a nerd and that's totally ok but shes kinda bratty and spoiled I'm sorry lol great that soyi likes her tho...I'm sure if she learned to better interact with people they would like to listen to her too but guess she got that temper from her mom lol...