Wow... What a civil response. Although I'm sure aarial appreciates your attempt at mapping her road to failure with math you might want to open a calendar before making any calculations. What you've done here is taken the very basic approach of counting the number of months between surgery and her anniversary, multiplying by 4 (because there's only 4 weeks in every month right?), and multiplying that by 7. And in doing so you've artificially inflated the numbers for no other reason than to shoot down her goal. So let's pick it apart shall we?
ERRR - wrong. Using the handy calendar (located in the bottom right of most PCs running Windows) we need to count the number of weeks and remainder of days between and including June 11th and October 25th. When doing this we come to the understanding that there's 19 weeks and 3 days in our time line - not 16 weeks and 0 days. This brings our pound per day loss requirement to .59 (rounded up from .588) which is a 21.4% lb-a-day loss requirement reduction from your inflated numbers.
Since you like asking your self questions I will answer this one for you: No. It's 2065 calories a day. This sounds like a lot at first until you actually think about it. Using conventional knowledge we know the average person is recommended to eat 2,000 calories a day to maintain they're current weight. This means any reduction in caloric intake results in some kind of weight loss. If after she is banded she limits her self to 1,200 calories a day then we're down to a required total of 865 excess calories burned. Using the Calories Burned Chart @ Calories Burned Chart By Activity as a generic/conservative guideline we can calculate that a 200lb (she's 245) person walking 1.5 hours a day burns 420 calories. And we're left 445 to burn - which I will consider easily burned by very physical nature of her work which she spends 8 to 9 hours a day doing 5 days a week.
I will now proceed with my own self-interview. Is this post exact science? No, but it's certainly more accurate than the doomsday scenario you painted in your response. So what is our lesson? Before you suggest someone is dumb you should probably make sure your own logic is in order.
If I sounded pompous and abrasive in this response it's because I meant to.