Feeding Russian Rat Snake

[Sylphie]

Hello,
I have a little problem with feeding my rat snake. She now has a year, but it's very small, about 20 inch. So far, I fed her one pinkie per week. From about one month she has become very gluttonous, almost after two / three days already looking for food. I would add that for some time weather got very warmly, as in the summer.
Can I feed her one pinkie everyday if she looking for it, or is it too much for her?





Thanks for any answers, and have a good day!