[Yang thinks that over for just a moment before answering.]
No thanks.
[It's said flatly, like she can't believe Mercury thinks she's that stupid or something.]
I don't have to prove anything to you.
Besides, I've got plenty of sparring partners.
["Plenty" might be over-selling it a tad, but she does have options. Never mind that she would literally rather have anybody else for a sparring partner than Mercury.]
no subject
No thanks.
[It's said flatly, like she can't believe Mercury thinks she's that stupid or something.]
I don't have to prove anything to you.
Besides, I've got plenty of sparring partners.
["Plenty" might be over-selling it a tad, but she does have options. Never mind that she would literally rather have anybody else for a sparring partner than Mercury.]