Tough bubble situation?

Hey guys,

I had this situation come up last night in a $50 sng. If I had a dollar for every time I lost one of these things with Ax or Ax suited at the end, III'd - well, I guess I'd still be out a lot of f'in money. Anyway, take a look at the situation - any feedback would be much appreciated. First a little background. Tiffany884, the villian in this case, was playing well - she wasn't particularly overaggressive. After you give me your take, I'll explain what I was thinking.

Party Poker NL Texas Hold'em $50 Buy-in + $5 Entry Fee Trny:14762504 Level:6 Blinds(100/200) - Friday, August 12, 01:06:18 EDT 2005
Table Table 22417 (Real Money)
Seat 3 is the button
Total number of players : 5
Seat 3: markoshark ( $440 )
Seat 4: rwesty2 ( $1235 )
Seat 7: JENCH712 ( $3335 )
Seat 5: HERO ( $1460 )
Seat 9: Tiffany884 ( $3530 )
Trny:14762504 Level:6
Blinds(100/200)
** Dealing down cards **
Dealt to HERO [ 5c Ac ]
JENCH712 folds.
tahoetessy: the girls are slapping you
Tiffany884 raises [400].
markoshark folds.
rwesty2 folds.
HERO calls [200].
** Dealing Flop ** [ Qs, 2h, 5h ]
HERO bets [500].
Tiffany884 raises [1000].
HERO is all-In [560]
Tiffany884 calls [60].
** Dealing Turn ** [ 3h ]
** Dealing River ** [ Jc ]

Results in white below:

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Thanks for your help!