1/3 game. No straddles allowed but for some reason some players blind raise to 6 from UTG instead.

UTG has $139 and has earlier got his SS in with middling strength hands (A7 on AK93)

Hero and SB both have $300-$400. SB is new to the table.

10 handed table, UTG blind raises to $6, SB flats, hero has QxTh and raises to $26. Fine so far?

Flop comes 89Qhh. SB checks, hero cbets $50 (how do people feel about the bet here? Better line? Better sizing?) UTG shoves $113 total, SB umms and ahs for quite a while, my read is he definitely had a medium strength hand or a draw, he's not fake tanking with a nutted hand. Eventually he makes the call.

Now here is getting over 5:1 with a gutter to the nuts, two overs to second pair, and back door FD. Given the strong likely hood you'll get to see the river for free do you call or fold?