Feed that girl!
I have found that my females get ravenous when they start breeding, and if you are not providing enough food they get very nasty tempers. I've never had one strike at a male, but I've had one "s" up to strike and I had to tap her head to snap her out of it.
If they feel they are not receiving enough nutrition, they loose interest in breeding fast. Mine eat heavily for the first few months, and don't go off feed until they are noticeably building and glowing.
Gale