Corrected entry: In the scene where Maggie is using saved coins because she has no other money, she dumps out the coin rolls and you can see that they are "props." The coin rolls she has are the sealed type that can only be produced by a machine and not those that are produced when you roll coins from a coin jar. She would have had to purchase the rolls directly from a bank or other vendor to achieve this and she clearly did not roll them herself.
Corrected entry: The movie is set in the 21st century judging by the ad for 'The Apprentice' on the side of a bus in an early scene, however in the title fight when Maggie is fighting the German woman a commentator refers to Maggie's opponent as the East German champion. East Germany has not existed since 1990.
Corrected entry: Frankie asks his priest about the "Immaculate Conception" questioning Jesus being born to a virgin. One would expect the priest to correct his misunderstanding of the doctrine since the Immaculate Conception refers to Mary's conception and not Jesus'. The Catholic Doctrine of the Immaculate Conception states that, unlike other people, at the time of her conception in her mother's womb, Mary's soul was not marked with the stain of Original Sin. Every other person's soul is and this stain is erased by Baptism.
Corrected entry: The priest tells Frankie; "I have seen you come to church for 35 years and I don't know why". First Catholic priests are not ordained younger than about 25 years old, that plus the 35 years this Priest has seen Frankie come to church should make him about 60 years old at least. Also in the US priests move from one Parish to another every two to three years or 7 if he is a Pastor.
Corrected entry: In addition to the already mentioned comments about the fact that Swank's character could have refused the ventilator, no Doctor would have amputated her leg without her consent.
Corrected entry: As soon as Frankie pulled out Maggie's breathing tube, it should have triggered some kind of alarm in the nurses station. Instead he was able to talk to her for a while and inject the adrenalin. He didn't even put the breathing tube back in when he left, to hide the evidence. They certainly should have suspected foul play.
Corrected entry: Clint Eastwood gets a call in the middle of the night which summons him to the hospital. By the time he gets there the medical staff are still in the middle of dealing with Maggie's suicide attempt. It seems unlikely that someone from the hospital would have called Clint that quickly or that he could have dressed and made it to the hospital in such a short time.
Corrected entry: Maggie is repeatedly told that she lost the fight. However, she would have won by default, as her opponent would have been disqualified for violating basic rules of sportsmanship in boxing.
Corrected entry: In the final scene, Eastwood's character gives her a shot of adrenaline to stop her heart. This would cause her heart to beat extremely fast for a while before it would stop, but the heart monitor shows her heart stopping immediately.