I'm sure the tiny bit of olive once in awhile probably won't hurt her, but every day would be a lot of sodium for that little one!
Coffee-even decaf-still has some caffeine in it. I think that caffeine is one of the reasons chocolate is bad for dogs, so I'd stay away from giving her any of that. Now, if you're just dipping your finger in it and letting her lick it off, it's probably fine-she won't get that much that way. Who knows how many things my two have tasted that way from my husband letting them check things out that way
. That "tiny finger dip" is how we discovered that Emma is a snob-and likes pickles, Cool Whip, and wine, but only red. She turns her nose up at white!