Are you? 
Are you sure?
There’s NOTHING wrong?
Nothing I can help you fix?
Nothing I can do to make you feel better than you already are? 

I’m pretty good at flying, I’m not the best, though. When I dropped that stuff on poor Twilight Sparkle’s head, I was simply having trouble balancing.  It’s easy to just flap your wings and fly, but it’s much harder to fly when your trying to distribute the weight of an anvil and a piano, among other things, between two ponies.
I don’t get training from Rainbow Dash, actually. She’s more of a racer type, and I just need to be able to take letters to the ponies of Ponyville. I rarely have to carry things that heavy. I learned all I know from my mother and my boss.

Hi sweetie! How are you?

Oh, hi there! *hugs back*
 

All muffins!

Oh, sweetie, no your not!
Come here, give mommy a hug, I’ll make you feel better. 

I agree. While I am very proud that she is sticking up for me (Instead of secretly resenting me like someponies think) Violence is bad, especially for young fillies like her.

Oh, sweetie! Are you ok?
Listen, Dinky, I know that sometimes ponies make fun of me, but you don’t have to put your self in danger to defend me. Mommy can take care of herself, ok?
I’m very touched that you would stick up for me, though. Just be careful. Next time, tell the teacher, or any other adult pony around.
Don’t worry, you’re not in trouble. At least not with me.

Muffins.
Yes.