IMO would be way to early for her to breed again. Producing babies takes a lot out of females. Quite often they will either refuse food totally or only eat a little during gestation. When they have babies, they look like deflated balloons. After a few days the internal organs have rearranged and along with a feeding they are not so deflated looking but take a couple of months or more to regain the mass that was lost.
From a weight standpoint, I see them gaining weight up until breeding season. Then stop eating and gain a little more (water gain). Then as gestation continues, they slowly lose a little until giving birth when they lose a LOT. roughly 1/4 - 1/3 of their overall weight. (from memory, not at home to see my records)
Sometimes I will give a individual female the year off if she has not regained enough weight IMO.
They are probably not breeding now, breeding only happens when the female gives off pheromones which would be unlikely so soon after giving birth. Probably just coincidental they are cohabitating. I breed many of mine in trio's and when I see two together I first look for tail wraps and then identify the female. I do identify both in the case of no tail wraps, sometimes the two females are simply in the same spot at the same time.
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Thanks,
Dave Colling

www.rainbows-r-us-reptiles.com
0.1 Wife (WC and still very fiesty)
0.2 kids (CBB, a big part of our selective breeding program)
LOL, to many snakes to list, last count:
26.49 BRB
20.21 BCI
And those are only the breeders 
lots.lots.lots feeder mice and rats 

