I agree with Russ, if nothing happens in 10-15 min, separate them an try again in a day or two. I try to always be around when I'm breeding my snakes and always separate them when their not hooked up. Its kind of hard with Cal kings because they stay hooked for so long, but Thayeri and Az. Kings seem to be short timers.
I have a Thayeri female who in the last two years has tried to eat her mates 4 different times, This year, 1st interduction two day after brumation shed. He's courting her, and she's not rejecting him, I'm cleaning cages,I here a bang and scuffle in their box. I open their box quickly to find his head all the way in her mouth. I was feeding her every five days. Three days later, 2nd try, I fed her between interductions. I put them together, both excepting each other right away, they hook up for about 25 min.,I thought, OK GREAT. I Had been checking on them every few min. Again I hear that sound, Bang and scuffle, I again open the box and find her again, with his head clamped in her mouth. This female I would never leave alone again with her mate.
Here is a picture I took about 15 min. before she tried to eat him again the second time. The darker of th two is the female
Thanks for looking.

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R.Bichlers Colubrids
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