CO flat called w/ QQ in the blinds after I opened on the button several hands ago and BTN seems like a pretty solid player. Am I playing this too weak tight?

$0.1/$0.25 No Limit Holdem
5 players
Converted at

Stacks:
UTG ($12.75)
CO ($61.10)
BTN ($24.60)
Hero ($43.50)
BB ($3.95)

Pre-flop: ($0.35, 5 players) Hero is SB [Qs]
1 fold, CO raises to $0.85, BTN calls $0.85, Hero raises to $4, 1 fold, CO calls $3.15, BTN calls $3.15

Flop: [Js][2c] ($12.25, 3 players)
Hero checks, CO checks, BTN checks

Turn: ($12.25, 3 players)
Hero checks, CO checks, BTN bets $8, Hero folds, CO folds

Final Pot: $12.25

BTN wins $19.65 ( won +$7.65 )
CO lost -$4.00
Hero lost -$4.00