Short stacker is a donk playing almost every hand

No reads on other player

Is pre flop a check or raise?

This seemed like it should be a fold to me but I wasn't really sure. Do people really chase low sets in Omaha? I guess a lot of the time I'm flipping against AhXhXxXx. I'm never really ahead here am I?

Full Tilt Poker Game #5917073063: Table Palomar (6 max) - $0.25/$0.50 - Pot Limit Omaha Hi - 10:42:05 ET - 2008/04/05
Seat 1: BMP-2_30mm ($77.10)
Seat 2: wegstockboy ($76.85), is sitting out
Seat 3: ratamahatta ($47.50)
Seat 4: jains ($4.40)
Seat 5: jharding666 ($20)
Seat 6: Pretzelnator ($57.35)
jains posts the small blind of $0.25
jharding666 posts the big blind of $0.50
The button is in seat #3
*** HOLE CARDS ***
Dealt to jharding666 [ ]
Pretzelnator folds
BMP-2_30mm calls $0.50
ratamahatta folds
jains calls $0.25
jharding666 raises to $2
BMP-2_30mm calls $1.50
jains calls $1.50
*** FLOP *** [ ]
jains checks
jharding666 bets $4.15
BMP-2_30mm raises to $18.45
jains calls $2.40, and is all in
jharding666 has 15 seconds left to act
jharding666 folds