Emerald had a baby girl, at 1'30 this am, and by 8 this morning the baby girl was dead

and at a closer look the baby had puncture wounds in her neck area........why do mom's kill their babies???? this has really devestated me, i did everything right, fed all the right foods, made sure mom was healthy, dad is a proven breeder, vet has been so impressed with me, and the dogs................So we have decided we want to spay her, but my friend tells me to wait and think about it, and give her a years rest and try again, but I do not want to put her through this again, and I don't think I can to. knw I am opening my self up to some pretty outspoken comments, please take it easy I am grieving, and so is Emmy.