Sorry to hear about this, I have never heard of this happening and it really down to the crew being careful.
The CSM was right to pass this on to CR if you cannot come to a satisfactory conclusion.
I have often had raw egg when I was younger and never has a problem, it must have been very unpleasant for your wife but I personally don't think she will come to any harm.
Hopefully CR will be in contact with you and offer you something that you feel is acceptable.