[Unfortunately, even (or rather, especially...) when she's trying-- subtle just isn't something Marinette does well.]

Oh. Wow... I had no idea. Well, I mean-- he's complimented my work before but I thought that was just him being nice. Still... it's true it's a good skill to have.

[At that last bit she flusters again, although her laugh is a little bit softer this time.]

I don't know about that. I'm still not sure I'm really teaching material.