Don't get me wrong, she will not be dancing in the street over this news. But, at least now she knows you are following through and working on her behalf. You are looking out for her. Wait a minute. After all, you sold the product.
Service is someone else's responsibility.
Yes, it is their responsibility, but, if there is a problem or a delay for your client, you should know about it. You worked too hard in the beginning to get her to become your client. That's what they are there for. This is extremely important. She knows you, not the person in the customer service department.