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Just do the very best you can do.  I'm sure your doing all the right things.
 We don't want to make her feel more alienated than she must feel already.
 We use a different butter tub to avoid our bread crumbs in the butter.  We
always prepare her pancakes first and move to another counter while mixing
together ours.  We cook her pancakes on separate grill.  When cooking breaded
meats in the oven, hers either gets separated or put on tin foil away from
ours.  When your eating at home is when it is easy to control the
contamination.  It's when you venture out of your house when it gets a little
tricky.  You'll do it!  Have fun!  I hope I helped a little.  I can go on and
on with little tricks.