25NL 55 in BB caught set, facing the dreaded flop minraise

[rh2020]

Villain in CO is something like 40/0/1.5 over 50 hands. He hasnt done too much wrong post flop. SB is a donk.

I called the SB reraise on flop as I'm fairly sure he doesnt have KK or AA, maybe 2 pair. More worried about passive CO getting heavy.. My stack is quite short, do you lay a set down here?

Absolute Poker
No Limit Holdem Ring game
Blinds: $0.10/$0.25
6 players
Converter

Stack sizes:
UTG: $37.05
UTG+1: $6.45
CO: $42.23
Button: $13.20
SB: $14.15
Hero: $13.40

Pre-flop: (6 players) Hero is BB with 5[img]/images/graemlins/heart.gif[/img] 5[img]/images/graemlins/spade.gif[/img]
2 folds, <font color="#cc0000">CO raises to $0.5</font>, Button folds, SB calls, Hero calls.

Flop: A[img]/images/graemlins/heart.gif[/img] 5[img]/images/graemlins/club.gif[/img] 4[img]/images/graemlins/spade.gif[/img] ($1.5, 3 players)
SB checks, Hero checks, <font color="#cc0000">CO bets $0.25</font>, SB calls, Hero calls.

Turn: K[img]/images/graemlins/spade.gif[/img] ($2.25, 3 players)
SB checks, Hero checks, <font color="#cc0000">CO bets $1</font>, <font color="#cc0000">SB raises to $4</font>, Hero calls, <font color="#cc0000">CO raises all-in $41.48</font>, <font color="#cc0000">SB calls all-in $9.4</font>, <font color="#cc0000">Hero ?