When Clients Don't Want to Listen

[By Invitation Only]

I just recently had a client ask me to design an invitation for their nephew who was going into the Airforce. The client had written their own poem which I was happy to include, with a few minor punctuation corrections, which I explained with a polite note that I had done so. I get my preliminary design back - no problems with the design, but would I please put the punctuation back the way she had it as she felt it flowed better that way.

I complied, but I'm still left with the question: is that invitation going to be a reflection on me and my work? Should I have pushed harder for the punctuation to be corrected or is the client always right?