I'm not too sure about Mildred - it doesn't sound very Sicilian to me.
1907 is right - well done.
After posting this puzzle I found a website dedicated to the history of the Targa Florio which says that this photo is from 1906, but it's a mistake. If you check the results, there were no Isotta-Fraschinis in the 1906 race.
I-F entered four cars in 1907, numbered 7a to 7d, and achieved 7th, 9th and 10th places. 7a did not finish.
Here's the unmodified photo. The numbers would have given it away too easily!