This is my take
In episode 17 Gordon Cole explained how there was a discovery of an entity, an extreme negative force named Jowday over time has become to be known as Judy. I think that the thing that spewed out Bob is Judy (mother of all evil) and I think the girl who had the frog/cicada go in her mouth was Sarah palmer. I believe the mother of all evil (Judy) grew inside her. Then when the firman saw this he sent Laura to her, hoping by giving birth to a girl would help Sarah keep her humanity so evil couldn't take over completely. Killing Laura would then help sever that connection. When Cooper went back and saved Laura then you saw glimpses of the town carrying on as normal with Pete going fishing and Josie putting her makeup on then it flashed to Sarah palmer stabbing Laura's picture in a fit of rage (Judy wasn't happy). The fireman said that evil had entered the white lodge (can't remember which Episode). So what if Judy then Sent Laura to another Mother? I think Judy possibly created another reality (the name of the diner Carrie worked at was called Judy's) this way she gets rid of two pains in her but, Laura and Cooper (two birds 1 stone). So Judy can spread her evil without interference from Laura and Cooper, by trapping them in the alternate reality.
. Que gran temporada 
quedar donde mismo
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