bred too young...

[MarkS]

There's nothing you CAN do now that the damage is done.

Either she will ovulate and produce eggs, lay and you'll deal with eggs and a depleted small female....
Or she will not ovulate now, but may still ovulate at a later time, still undersized, lay eggs and you'll deal with eggs and a slightly less depleted female...
Or she will not ovulate until far later in life when she is of proper size, lay eggs and be fine....
Or she will ovulate, try to produce eggs and die...
Or she will ovulate, produce eggs, become egg bound and either require vet surgery or die...

There is one other possiblilty that comes to mind.

BOTH snakes were mis-sexed and are actually both male. I've seen male snakes copulate with other male snakes before. I believe that they do it as a show of dominance.