I'm not sure I can give any advice to help your situation specifically but I can say some stuff that might help other non-technically people in the future.
Make sure you have milestones setup in your development process. If she said it would take 6 months then make sure at 4 months your developer is at a reasonable place, hell make sure at 2 months that they are, if they aren't then it's time to reconsider the contract.
If they estimated it would take 6 months to do then by 4 months 90% of the site should be done, the other 90% is the smaller fixes, tweaks etc that always take a long time but a good developer will have learned to account for these in their estimate, but you should have a functioning(although not totally) site that far in.
I'm not one for micromanaging or the non-technical boss watching over the hackers shoulder every 2 minutes getting in the way, but it really shouldn't have been allowed to drag on for 12 months without a product. After missing the first estimate without a full application(even if it was a buggy one) you are going to have serious problems and should be looking for someone else because they are either too inexperienced to estimate their own work, too inexperienced to break their estimates down, or not doing their work.
Make sure you have milestones setup in your development process. If she said it would take 6 months then make sure at 4 months your developer is at a reasonable place, hell make sure at 2 months that they are, if they aren't then it's time to reconsider the contract.
If they estimated it would take 6 months to do then by 4 months 90% of the site should be done, the other 90% is the smaller fixes, tweaks etc that always take a long time but a good developer will have learned to account for these in their estimate, but you should have a functioning(although not totally) site that far in.
I'm not one for micromanaging or the non-technical boss watching over the hackers shoulder every 2 minutes getting in the way, but it really shouldn't have been allowed to drag on for 12 months without a product. After missing the first estimate without a full application(even if it was a buggy one) you are going to have serious problems and should be looking for someone else because they are either too inexperienced to estimate their own work, too inexperienced to break their estimates down, or not doing their work.