Glad your week went well, after all, Liz. And think you were given a lot of good advice here. Sorry you didn't get to use it this time, but certain it will be helpful for the future.
Just one other thought... Please be sure you mean it if you do give her an open choice. After all, even a child has the right to say "no" if they are asked if they want to do something or not. For example, don't assume she'll jump at the chance to do something you think is fun for kids like feeding the ducks. If you ask, "Do you want to go feed the ducks," be prepared for the fact that she might not want to. If you really want to get the kids out of the house, just tell her "We're going to go feed the ducks now" or, as others have suggested, give her a choice of two activities.
Here's hoping your next visit goes more smoothly.