Not nice. You have absolutely zero idea what she has or has not done with her degree. Choosing to study art or any creative field is as fine a choice for some as engineering would be for others. Attempting to shame people, acting as if YOU have the right to judge her (I didn’t see her asking you for an opinion about her choice) and patronizing her with the “art peddler” comment is really uncalled for… and total BS.And this life choice was made because there is such a high demand for art peddlers? Good luck.
You might want to ask for the school to return your tuition.