Oy, Vey! Make sure that your spinach dip has been ritually slaughtered properly with its neck toward Jerusalem, then.
Quarter Bavarian Jew myself (the Bessendorfer line that fled here to the States in the 1900s are the only branch that made it through the ravage of WW2),
-LN
Thank God she's not Orthodox, or she wouldn't be able to eat prepared food at my house at all. I have some pots and pans that have never been used for anything on the forbidden list, and I use paper plates. I'm kinda used to this, but it does take some planning.
The vegetarian will eat fish, so I usually go with something like that, or make her cheese enchiladas and refried beans.