You would be surprised at how large a meal your snake can take. I follow the guideline of feeding a meal (rat) that is just slightly larger in circumference than the belly of my snake. My female is a bit larger than yours and she takes 2-3 small rats per week.
I have used RodentPro and their service is good. Its a bit on the pricey side because they dry ice and overnight the package to you. But if its your only recourse, they are good.
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1.0 Albino American alligator, "Smoke"
1.1 American alligator,"Al Bite Ya & Molly"
1.1 Purple Albino Reticulated Pythons, "Gumbo & Abita"
0.1 Eastern Gaboon Viper, "Gabbie" Recently passed away at 24 years old
Help me find this snake!