Villain is new to the table

PokerStars No-Limit Hold'em, $0.25 BB (8 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

MP2 ($28.45)
CO ($37.15)
Hero ($52.50)
SB ($18)
BB ($16.70)
UTG ($24.40)
UTG+1 ($37.60)
MP1 ($24.75)

Preflop: Hero is Button with 4, 4.
1 fold, UTG+1 calls $0.25, 3 folds, Hero calls $0.25, SB completes, BB checks.

Flop: ($1) 9, 3, 4 (4 players)
SB bets $0.25, BB calls $0.25, UTG+1 raises to $1.25, Hero raises to $4, SB calls $3.75, BB folds, UTG+1 folds.

Turn: ($10.50) J (2 players)
SB bets $13.75 (All-In), Hero?