[Ed Miller]

Presumably you 3-bet preflop because you thought you had the best of it. Now the flop comes down TT2 rainbow and you get a peculiar donk-bet (not exactly the biggest sign of strength). You should raise.

This is not a way ahead or way behind hand. It's likely you have the best hand, and it's also likely that you'll get at least one raise called. Expect a weaker pocket pair, ace-high, a bluff, or whatever far more often than a ten or a monster. You need to put some more action in.

EDIT: BTW, I'm not comfortable with these responses telling you to raise to find out where you're at. You should raise because you are still likely to have far the best of it, and you gotta get value for your hands to punish weak donk-bets.