C&C Chickens :
I haven't read all of the replies to your original post, but I wanted to point out, in case no did else did so explicitly, that your neighbor sounds like she is mentally ill. I'm talking a personality disorder, not schizophrenia. At any rate, she is clearly being unreasonable and using your dog's barking as an excuse to act out her mental illness, unfortunately towards you. Unfortunately it is nearly impossible to deal with someone like her in a reasonable manner, but it can help you to remember that it really isn't personal, she's mentally ill and can't control her behavior. At the very least, I would continue working on keeping your dogs quiet after 9 p.m., and get a copy of your local noise ordinance so you know what your rights are. I would consider providing her a copy of the ordinance with a note worded very carefully and simply that you are sorry that she is disturbed by your dogs' barking, that you are trying to keep the noise down, and that you are in compliance with your local noise ordinance. I would leave it at that. She may continue to act out toward you, but I would try to not let it show that her behavior effects you at all.
You have my sympathy - I have also dealt with a very crazy neighbor and it is very stressful.
There are no grounds in what the OP has written for saying that the neighbour is mentally ill. She is possibly stressed and that might be from other things in her life, barking dogs at 11.00pm being the last straw. She may be able to sleep through music but the sudden barking of dogs might wake her and she may then have difficulty in getting back to sleep. I can empathise with that.
I have previously suggested that the OP check the local regulations on noise to see whether she is in breach of them. If she is, she will have to do something about her dogs. She has not written again to say that she will do that so we are still short on facts here. Still, whilst the facts are unknown there's still room for a good old rant, eh?
Why aren't the darned dogs taken for a walk in the evening? It might be easier to let them into the garden but, if the noise annoys a neighbour, some change of habit should be considered.
Someone suggested that we might not have heard the full story. Every story has two sides. OP, is there more to this than you have yet revealed?
I haven't read all of the replies to your original post, but I wanted to point out, in case no did else did so explicitly, that your neighbor sounds like she is mentally ill. I'm talking a personality disorder, not schizophrenia. At any rate, she is clearly being unreasonable and using your dog's barking as an excuse to act out her mental illness, unfortunately towards you. Unfortunately it is nearly impossible to deal with someone like her in a reasonable manner, but it can help you to remember that it really isn't personal, she's mentally ill and can't control her behavior. At the very least, I would continue working on keeping your dogs quiet after 9 p.m., and get a copy of your local noise ordinance so you know what your rights are. I would consider providing her a copy of the ordinance with a note worded very carefully and simply that you are sorry that she is disturbed by your dogs' barking, that you are trying to keep the noise down, and that you are in compliance with your local noise ordinance. I would leave it at that. She may continue to act out toward you, but I would try to not let it show that her behavior effects you at all.
You have my sympathy - I have also dealt with a very crazy neighbor and it is very stressful.

There are no grounds in what the OP has written for saying that the neighbour is mentally ill. She is possibly stressed and that might be from other things in her life, barking dogs at 11.00pm being the last straw. She may be able to sleep through music but the sudden barking of dogs might wake her and she may then have difficulty in getting back to sleep. I can empathise with that.
I have previously suggested that the OP check the local regulations on noise to see whether she is in breach of them. If she is, she will have to do something about her dogs. She has not written again to say that she will do that so we are still short on facts here. Still, whilst the facts are unknown there's still room for a good old rant, eh?
Why aren't the darned dogs taken for a walk in the evening? It might be easier to let them into the garden but, if the noise annoys a neighbour, some change of habit should be considered.
Someone suggested that we might not have heard the full story. Every story has two sides. OP, is there more to this than you have yet revealed?