Make a deal with her.
You will agree to circumcise a son if she will agree to circumcise a daughter. Say, half the clitoris and all of the labia. That is bound to cut down on yeast infections and any pimples on the labia that might get infected. (Yes, it does happen!
) Or how about you excise your brand-new baby girl's breast tissue because she has a 1 in 8 lifetime chance of getting breast cancer, which is way more deadly than (alleged) foreskin infections.
Or better yet, you will allow your son to be circed if she will agree to cut off the equivalent amount of adult tissue from her own genitals. (about the size of a 3 x 5 index card).
OK, so obviously she's not going to make this deal, but she needs to understand that cutting off half of a baby's erogeneous tissue because he MIGHT have an infection someday is ridiculous. Has she ever had a UTI? A yeast infection? Bacterial vaginosis? What parts of her own genitals would she be willing to cut off to treat those? Civilized people use antibiotics, not amputation, to cure infections.
Not one single medical organization in the world recommends routine infant circumcision to prevent infections!!
Please, please, please don't give in to her tears. As much as I'm sure she is feeling some strong emotions about this subject, she is being irrational, pure and simple. Probably exacerbated by the pregnancy hormones. She may be truly upset but she will get over it. Your son would never recover the lost sensations and experiences of having an intact foreskin.
Has she read any of the links posted? Watched the video? She is simply not operating from an informed position here.