Update:
In reply to my reply letter she called me. Turns out a couple of photos I'd Googled from were originally hers, so I was using her photos without knowing it. She still thinks I should link to her as a source since I was aware of her chart when I made mine.
I changed the photos, am redoing the page, and am getting permission from all the detergent companies to use photos from their sites. Eventually I'll have links to all the detergent companies as well as her site and the third site that has similar charts.
I'm miffed that she went through the whole DMCA thing instead of just emailing me to say "hey - those photos are mine please change them." If she'd sent me an email I would've made the changes, no problem, and it would have been clearer to me what she was objecting to.
So anyway, that's hopefully the end of my drama. Lesson learned: Don't use ANY Googled photos unless you have permission.
