I could suggest some experiments:
Does your wife's cell always show this behavior? Have her call you to see if you can verify it. It is possible that the cell company registered it incorrectly but that would be very consistent, so you should see it also.
If that's not it, try having her call your daughter and then you call her from your cell. If both are fine, then it might be a routing issue. If both show the wrong locations, then it might be how your company routes calls. If just her phone shows an issue, but it didn't happen when she called you, then that's just weird.
If you get the weird result and you have the right types of phones, swap chips between the phones and try it again. I doubt it is a hardware issue, but that would test it.