I too think its just a matter of timing. Once you have your beautiful new kitchen up and running, the brides will flock to you. You have the benefit of your qualifications, you have an approved kitchen - all these things are positives that will win you business over the (perhaps illegal?) home bakers in your area.
I have no idea of your pricing, and you advertising etc, but these things can be looked at also to encourage more brides, and to get them to commit.
There are other marketing principles that can assist in your converting enquiries to sales. Do you have much experience in selling? When you are going through emotional, or physical, trauma it can show on your face and your countenance. Sometimes we can appear downtrodden and worn out, when really we are having a bad day, or bad week. This 'vibe' is not what the typical bride is looking out for. They want someone who is in demand, knows their s**t, and is confident in making the cake the bride wants. It sounds counter-intuitive, but I believe the less 'available' you are, the more demand you will have!
What is your current location for consultations? Would you be better in another environment? Several cakers here on CC operate out of a shared office space to do their consultations. Maybe a remote location would help at the moment until your carriage house is ready for action?
Another thought - have you ever participated in a bridal fair? At the moment it is bridal fair season here, and I know when I started up, it was one way to get exposure. This then translated to more referrals than I can handle.
Lastly, with your consults, are you offering fresh delicious cake samples? With your vast experience, you can certainly put together something so amazing and generous, you will win people over with the quaklity of your products.
I'm so sorry you are going through a tough time, and I do hope the words of encouragement here have helped buoy you and inspire you again. Life has a habit of throwing challenges our way, regardless of age. This won't be the last one! Hang in there, learn the lessons from the experiences, and focus on the big picture. Visualise yourself working in your beautiful new bakery, doing what you love and being a true success story. You will come out of this stronger!!