Started my own business: Things not going so well with my first client?

I’m working from home, have left other jobs to start my own business. Got my first client which is wonderful. She is wanting all my time which is great! But no room for other clients at the moment. I have ALOT of experience working in corporate America, for huge companies - doing sales development/digital marketing. Well this client hired me to plan events and help sell her product, a book. All great, I also have a partner doing the digital media side - well I’ve found myself in this horrible awkward position, because she’s asked us to make this book be huge, aka she just wants people and bookstores to know about it so they can place an order for the book - SO I did what any good business development person would do, I leveraged my access with a very reputable data source where basically we have access to every independent book store in the country. Trying to be honest, and on the same page I let the publisher know what email we would be sending out. Also hoping they would have an end place for me to help independent book stores place a book order (like a link or email). Well NOW it’s completely blown up, the publisher is mad, and now my client is worried about her relationship with them.. and to make it even better a bunch of people are copied on the email threads, very reputable people.. and IT ALL seems to make me look terrible I feel like. The client, now just wants to be upfront with them and explain we have access to the database, what other types of customers other then bookstores can we reach out to (which I support) but the truth is the publisher seems really mad, and I feel like it’s MY fault, and like I did something wrong when in reality I was just trying to help sell the book for a big win for everybody. I’m so embarrassed, and defeated and want to give up - I’m worried I’m going to get fired, with no references when I’m just getting my business off the ground. Any advice ? Anyone have stuff go horrible wrong with a client after having only the best of intentions ? What did you do?