This is a hand from one of my students and would like some feedback on what you guys think the best line would be, more important is, as played, call or fold the river?
This is basically just a post to create conversation and get people thinking!

PokerStars - $2 NL - Holdem - 9 players
Hand converted by PokerTracker 4: http://www.pokertracker.com

UTG+1: 128.76 BB (VPIP: 32.26, PFR: 9.68, 3Bet Preflop: 3.45, Hands: 62)
MP: 114.28 BB (VPIP: 20.03, PFR: 13.79, 3Bet Preflop: 6.68, Hands: 1,957)
MP+1: 110.54 BB (VPIP: 17.78, PFR: 8.89, 3Bet Preflop: 0.00, Hands: 45)
MP+2: 100 BB (VPIP: 16.89, PFR: 13.32, 3Bet Preflop: 9.09, Hands: 538)
Hero (CO): 208.66 BB
BTN: 181.45 BB (VPIP: 19.86, PFR: 16.12, 3Bet Preflop: 10.92, Hands: 433)
SB: 100 BB (VPIP: 19.75, PFR: 10.19, 3Bet Preflop: 1.56, Hands: 158)
BB: 100 BB (VPIP: 17.79, PFR: 11.73, 3Bet Preflop: 4.85, Hands: 4,070)
UTG: 131.22 BB (VPIP: 24.97, PFR: 17.81, 3Bet Preflop: 6.41, Hands: 4,888)

SB posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.5 BB) Hero has 9h 9s
fold, UTG+1 calls 1 BB, fold, MP+1 raises to 3.5 BB, fold, Hero calls 3.5 BB, BTN calls 3.5 BB, fold, fold, UTG+1 calls 2.5 BB

Flop : (15.5 BB, 4 players) 9d 3c 7h
UTG+1 checks, MP+1 bets 7.35 BB, Hero calls 7.35 BB, BTN calls 7.35 BB, fold

Turn : (37.55 BB, 3 players) Td
MP+1 checks, Hero bets 27 BB, BTN raises to 74.5 BB, fold, Hero calls 47.5 BB

River : (186.55 BB, 2 players) 2h
Hero checks, BTN bets 96.1 BB and is all-in