A young liberal woman refused to cooperate with prosecutors after violent recidivist Rhamell Burke attacked her on the subway five weeks before he allegedly pushed a retired NYC teacher to his death on Thursday.  Now the 23-year-old woman has regrets. “Maybe a part of me was just like, I don’t want to put another black man in jail,” she told The Post. Maybe if she had indulged in less self-congratulatory empathy for the maniac who allegedly tried to kill her and felt more compassion for her fellow New Yorkers left to the mercy of an out-of-control predator roaming the streets, Ross Falzone would still be alive.  But Falzone, 76, was unlucky enough to be entering the Chelsea subway station Thursday afternoon when Burke allegedly randomly shoved him down a flight of stairs, leaving the beloved ex-teacher to die hours later at Bellevue Hospital from a catastrophic brain injury.…