My Kid Is Not Good At Classical Dance:(

OP, reading your post I honestly feel bad for your daughter. For a kid to say, mom im doing it for you, must be painful.

I think the problem here is you are finding it difficult to stand up to your relatives. Please do not make your child feel forced to do something for the above reason.
When you give her a chance to try and become good at something she really likes, you can talk proudly about that to your family.

I know that as a mother it gives us a lot of happiness to see our child follow our footsteps. However, each kid has his or her talents and it's much easier for all to allow them to pursue that.

I used to hate arts and craft as a kid and loathed it when relatives with girls told my parents "Oh, my girl is so good at tailoring, see she made this and that... That's what girls are supposed to do." And my dad used to say proudly "My daughter plays three kinds of sport. She's the only girl in our family who does that." And that shut them all up.

Lastly, for all you know, your daughter may discover some hidden love for classical dancing later in life. I did recently and going full swing now.