i think it's logical that she didn't found any hatches cause they were underground (pearl, swan), under water(looking glass), behind a door buried under trees and bushes(medical station) and on another island(hydra), the only one's she could found was the flame and arrow(but this last one was on the other side of the island, and it's a large island).
Next
They also kidnapped Claire and the baby so because there are fertility problems on the island(sorry for bad English, I'm from Belgium). So they could have kidnapped dannielle as well and helped her delivering the baby(alone is very difficult i guess). But then she escaped without baby and then she tried to protect herself from her hostiles(Ben and the gang). The only problem she couldn't get to her baby was the ****ing sonic fence. There she saw Ben and knew he was from the others.
Also when you kidnapped a baby after 2 weeks, the baby couldn't tell her name because it's a baby.;-)
so there must have been some contact between Ben and dannielle.
Ben then raised her and told her that her mother died on the island, after she gave birth. Just like all the other woman died after they gave birth.
sounds logical to me?
no?
greetz
from Belgium
leximan