NL 10 A7 - weak river fold ?

[Seeeno]

Played fine ?
No reads, only ten hands ...
Is the isolation raise pf bad ?

Full Tilt Poker - No Limit Hold'em Cash Game - $0.05/$0.10 Blinds - 8 Players - (LegoPoker HH Converter)

SB: $6.90
BB: $9.20
UTG: $10.30
UTG+1: $18.15
MP1: $1.85
MP2: $22.05
<font color="black">Hero (CO): $10.05</font>
BTN: $9.85

<font color="black">Preflop:</font> Hero is dealt A[img]/images/graemlins/spade.gif[/img] 7[img]/images/graemlins/heart.gif[/img] (8 Players)
UTG folds, UTG+1 calls $0.10, 2 folds, <font color="red">Hero raises to $0.45</font>, 3 folds, UTG+1 calls $0.35
Uncalled bet of $0.00 returned to Hero

<font color="black">Flop:</font> ($1.05) A[img]/images/graemlins/club.gif[/img] 9[img]/images/graemlins/club.gif[/img] Q[img]/images/graemlins/heart.gif[/img] (2 Players)
UTG+1 checks, <font color="red">Hero bets $0.80</font>, UTG+1 calls $0.80

<font color="black">Turn:</font> ($2.65) K[img]/images/graemlins/heart.gif[/img] (2 Players)
UTG+1 checks, <font color="red">Hero bets $1.80</font>, UTG+1 calls $1.80

<font color="black">River:</font> ($6.25) 4[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">UTG+1 bets $2.20</font>, Hero folds
Uncalled bet of $2.20 returned to UTG+1

Pot Size: $6.25 ($0.60 Rake)