Happy birthday, Plei!
Good lord, Sophia -- that's a heck of a favor to ask. I do love that you started posting about 1920s costumes and then all of a sudden a bunch of them were robots. Hee.
Also good lord, Consuela -- I hope they can settle into a routine with the extra help, because that sounds like a brilliant combination of skills and I might like to hire her just for me. I know for my father, unknown future things can be unsettling, but most things in front of him are OK.
I'm thinking linen blouse, wear shorts to the zoo, put on a skirt for the dinner? Go business skirt (knee-lenth suit-style) or long linen skirt?
flea, I'd be worried about wearing linen all day before you want to look nice, due to the wrinkling. For the long interview part, I don't think you need to worry that much about looking too wintry, if they are conservative -- a dark suit is usually wintry-looking and always appropriate as a conservative interview outfit.