Slow Playing in High Low?

[Jorge10]

Party Poker (8 handed) converter

Preflop: Hero with 5[img]/images/graemlins/diamond.gif[/img], 4[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/heart.gif[/img].

Flop: 2[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(5 players)</font>
Villan bets 4 dollars, I am second to act and call, 2 others call.

Turn: Q[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
Villan goes all in for 25 dollars(small stack), I call, the other 2 fold.

River: Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>


Ok hand converter is kind of messed up, I had to edit a few things. The reason I posted this hand is to ask wether slow play in omaha high low is ever right. I thought this was one of the few situations were it was, but it came back to bite me, so I dont know if I played this hand wrong or whats going on. I think this is slow play gone wrong and its my fault for slow playing it, but still just wanna make sure.

Results:
Villan shows [ 6c, Qd, 4s, Qs ] four of a kind, queens.
Hero shows [ 5d, 4c, Ac, 3h ] three of a kind, fives.
Villan wins $74 from the main pot with four of a kind, queens.
There was no qualifying low hand.