Is raising too thin ?

[Borsig]

Villain is a 47/19/1.27 donk with a river AF of 5. My image is probably pretty poor because I have been isolating him a lot recently and I've been taiking the pots down on the flop for the most part.

No IQ poker 2.00/4.00, hand converted by the iPoker Converter at Talking-Poker

Button Hero ($400.00)
SB hokie2 ($200.40)
BB ElPurco ($400.00)
UTG TRIBNIB1 ($299.00)
UTG+1 vanyatka ($576.40)
CO Villain ($389.25)

Dealt to Bors1g [10[img]/images/graemlins/club.gif[/img] Q[img]/images/graemlins/heart.gif[/img]]

Preflop: , 2 folds, Villain raises to 16.00, Hero calls 16.00, 2 folds.

Flop (38.00) 3[img]/images/graemlins/spade.gif[/img] 9[img]/images/graemlins/heart.gif[/img] 4[img]/images/graemlins/spade.gif[/img]
Villain bets 16.00, Hero raises to 44.00, Villain calls 28.00.

Turn (126.00) 3[img]/images/graemlins/heart.gif[/img]
Villain checks, Hero checks.

River (126.00) Q[img]/images/graemlins/club.gif[/img]
Villain bets 56.00, Hero raises? If so, how much and what if he shoves?