99 UTG. do I call two all in bets here?

[fourpin]

I am afraid I have backed myself into a corner here. By raising preflop I am in a position to be either a substantial chip leader or a cripple.
Advice will be valued both pre and post flop.

Live $50 buy-in, 100+ player tourney with $10 bounties on all players.
Blinds are $200-$400 (20 minute rounds) and go to $300-$500 next hand
Avg stack size at my table is $3600. A couple tough late position players with 6k-7k in chips will definately make my life miserable if I just limp in.
I have $3100 in chips
UTG+1 also has $3100
MP has $1700

I wake up UTG with 99 and raise to $1500 (3XBB raises were being called by too many)
UTG+1 reraises to $3100 (all in)
All fold to MP who calls all in for $1700
Folded around to me. ($6900 in pot)
I have $1600 behind, My next move is...


UTG+1 is a tight passive little old lady. She made one "Hail Mary" raise from UTG when she very was short stacked (she held J9s).
I assume her reraise all in means a huge pair, maybe KK but probably AA.

MP is a loose passive calling station. He hasn't made a bet of his own since the tournament start. My guess is he has 2 broadway cards and sees a good chance to triple up.

If I am HU with UTG+1 this is an easy (but painful) fold. With MP in the pot + the dead money from the blinds I think I have 4.3:1 odds to catch my set by the river. If I fold I won't have enough chips to play more than one circuit.