Assuming this is when they're older and Sokka has taken her to live at the water tribe... Older Toph = I approve. Shipping 12 year olds is scary. Very nice drawing!
Yes, they're both older in this. Toph's 15, and Sokka's 17 (about those ages at least). I love Tokka, though you are right: they can't get together for a few years after the show ends.