NL50 did we improve on the turn?

[Panic__NL]

Villian is 41/23/1.7 over 140 hands
I am 22/19/3.5


iPoker No-Limit Texas Hold'em (NL50), $0.50 BB (6 handed) SilverKitty Hand History converter by www.pokeronline.com.ua

MP3 ($26.95)
CO ($93.1)
Hero ($49.25)
SB ($88.2)
BB ($57.65)
MP2 ($63.8)

SB: Post SB $0.25
BB: Post BB $0.50

Preflop:
Hero is Button with A[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/heart.gif[/img]
MP2 Call $0.5
<font color="#666666">2 folds</font>
Hero Raise $2.25
<font color="#666666">2 folds</font>
MP2 Call $1.75

Flop:($5.25) 5[img]/images/graemlins/spade.gif[/img], 2[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/spade.gif[/img]<font color="#0030DD">(2 players)</font>
MP2 Check
Hero Bet $4
MP2 Call $4

Turn:($13.25) A[img]/images/graemlins/diamond.gif[/img]<font color="#0030DD">(2 players)</font>
MP2 Check
Hero Bet $9
MP2 Raise $18
Hero ???


call, fold or shove, what if we call and he shoves the river?