I don't know under what circumstances the morning-after pill is available in Chile, but in the US it is now available OTC w/o prescription to people of any age. The ""boyfriend"" will probably stock up on them after he gets out of jail, so as to protect his azz in the future, and t'hell with physical, emotional, and spiritual wreckage to the girl.
I'm fairly sure that's not what you want.
The disruptions of an 11 Y/O giving birth are well known, and none of it good. If she could have fled to a hospital immediately after being raped then all the evidence would be there. In a sane world this rapist boyfriend would never see the light of day again.