In essence, she is right.
If over-population is affecting climate (might be?) then decreasing or changing the population trend (might be?) key to stabilizing the climate.
"Eating Babies" is a twisted way to put it tho...LOL
Well if she truly wanted to change her carbon footprint she would kill herself. But yes, in a twisted way eating babies would help, we wouldn't eat old people cuz they have already done their polluting, and besides they would most likely be pretty tough, as to where babies would be nice and tender and less likely to transmit diseases, not to mention they are relatively easy (and fun) to reproduce.