I'm going to describe the chain of events for a normal female, and how I manage their care. I feed a female that I am going to breed about every 7-10 days, depending if I want her to gain weight, or if she is at an acceptable pre-breeding weight. I weigh the female at every feeding so I have a good idea about how much weight she is gaining or losing. (It is also a good idea to exercise your female from now until she goes blue before laying. You just need to do 10-15 minutes of gentle exercise daily to make a difference in how toned she is for egg laying).
As soon as she starts breeding, I will be feeding an adult mouse in the 22-26 gram range about every 5-7 days, again depending on how fast I want her to gain, and to coincide with her breeding schedule. I pair the snakes every three days, so the female generally eats every six days. I feed after mating, allowing the female to rest in the breeding bin for a couple hours, if possible, before feeding her. I feed the male on the same schedule as the female, only every 12 days.
When the pairing is done, after five successful matings, or the pair quits, I feed every 5 days until the female goes blue for her pre-lay shed. After the matings are complete, I also remove the female's large water bowl and replace it with a very small one, and provide a lay box. The female often takes up residence in the lay box immediately. Once the female is blue, I do not feed again until the clutch is laid.
When the clutch is laid, I feed that evening or the next day, a smaller meal like a couple hoppers, and then return the female to a 5 day schedule on adult mice. The female will go blue almost immediately, and I will continue to feed while she is blue, for this time only. (I normally avoid feeding snakes while in blue). Once the female sheds, I again watch her weight and keep her at a 5-7 day schedule as she regains her weight. I have heard, but have not really experimented with, that the heavier you feed the female during the post-lay period, the more likely she is to double clutch. So you _may_ be able to use feeding amounts to either promote or discourage double-clutching, depending on what you want.
If the female is going to double clutch, she will generally lay the second clutch at about the time the first clutch pips. When she goes blue, I switch out the water bowl again and provide a lay box again.
After the second clutch is laid, I feed every 5-7 days, and then gradually move from 7 to 10 to 14 days, and keep the female on a 14 day schedule through the winter. You definitely don't want a fat female going into breeding season; lean and muscular is better than fat and flabby.
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It would be helpful to know how much your snake weighed before you bred, after her pre-lay shed, and post-lay. But a healthy clutch can weigh from 100-200 grams, so the post-lay female will lose quite a bit of weight, sometimes. I'd say mine average about 120-150 grams of weight loss.
So your snake seems to be in the expected range of weight loss. I know it is VERY unnerving the first time you see a post-lay female; they seem exceptionally skinny and scrawny. Generally, though, the snake will put on _some_ weight before the second clutch, and drop down to even less than she weighed after the first clutch, but then it is _usually_ very easy to put weight back on her, feeding every 5-7 days and even slitting the mice if you want to promote easier digestion.
make me feel at ease!!