OMG. I have a partial request that came in over a week ago. Is it too late to send it? Is she going to think I'm irresponsible or an idiot for not checking my spam folder?
Stuff happens. Just send the partial. You might include the phrase "I'm sorry to be late in replying, my spam folder thought you were delicious."
Check your spam folder daily.
It's good practice for obsessing over your Amazon sales rank.