0.15/0.25 Valuebet on River with AA?

[Dorian008]

PokerStars No-Limit Hold'em, $0.25 BB (8 handed) Hand History converter Courtesy of PokerZion.com

SB ($74.10)
BB ($10.15)
UTG ($10.90)
UTG+1 ($9.90)
Hero ($34.60)
MP2 ($5.35)
CO ($31.95)
Button ($3.85)

Preflop: Hero is MP1 with A[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $1</font>, <font color="#666666">3 folds</font>, SB calls $0.90, <font color="#666666">1 fold</font>.

Flop: ($2.25) 7[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $0.25</font>, <font color="#CC3333">Hero raises to $1</font>, SB calls $0.75.

Turn: ($4.25) 6[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $0.25</font>, <font color="#CC3333">Hero raises to $1</font>, SB calls $0.75.

River: ($6.25) J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, Hero checks.

Final Pot: $6.25

I'm not sure if i got a Valuebet here on the River, it's a quite ugly board and a busted flush draw won't call me.

Villain is unknown so i got no clue how and when he is using such donkbets

Generally such small donk bets are confusing me, but i think this hand was quite well played or what do you think?

[bsball8806]

&lt;------ full ring is over there

if you think he might have a (busted) flush draw, why do you raise so small on the turn?