IF this story is true (and at this point it is just hearsay), has it occurred to anybody that
1. Lots of women at 3 mos pregnant do not look obviously pregnant
2. Yelling in the middle of a riot, quite likely nobody will hear and understand you in the midst of the chaos
Ergo, it seems very improbable that even IF this actually happened, that the police had any idea she was pregnant in the midst of the melee...