No, you are definitely correct. the OP was just saying that in certain firefox applications, and in google, sometimes if you have google autocomplete when you start to type something in the search bar, it will bring up options for related search terms, and that maybe Cindy accidentally clicked on how to make chloroform.
http://lifehacker.com/326824/turn-on-auto+complete-on-google
For example, when I start to type "chloroform" into the google search bar, I get an option for "how to make chloroform" even though I didn't add "how to" to the search. I could have accidentally clicked on it. The thing is, when I start to type in "chlorofil" this doesn't happen. So Cindy would still have to explain away the the exact verbage of the search, as you suggested

(Unless she was searching for how to make chlorophyll, as another poster suggested, which...well, why would she?)
So I was guessing that even if Cindy tried to explain it away that way, I doubt there are any records of a chlorophyll search on her comp...regardless of ANY misspelling