At the river, villain has $7.85 remaining in his stack. Should we just jam the river, or is c/c better? Are we ever considering folding? Also, how are the other streets played?

Villain 18/12 over 179 hands:

Full Tilt No-Limit Hold'em, $0.25 BB (9 handed) - Full-Tilt Converter Tool from FlopTurnRiver.com

CO ($21.37)
Button ($33.74)
SB ($5.35)
Hero (BB) ($25)
UTG ($12.95)
UTG+1 ($26.86)
MP1 ($30.79)
MP2 ($8.62)
MP3 ($25.44)

Preflop: Hero is BB with A, K
UTG calls $0.25, 7 folds, Hero bets $0.85, UTG calls $0.60

Flop: ($1.80) 7, K, Q (2 players)
Hero bets $1.25, UTG calls $1.25

Turn: ($4.30) 6 (2 players)
Hero bets $3, UTG calls $3

River: ($10.30) Q (2 players)
Hero ????

Total pot: $26 | Rake: $1.30