In this case, I would have to disagree. Having escaped the farm, it was logical for Helena to hide out in a place she knows. Being a foreigner in this city, her choices are limited and using Mrs. S’s basement doesn’t sound too far fetched. Sarah looking for clues for Mrs. S’s whereabouts in the same house also is a plausible step for the characters. From there, having Helena follow Sarah and eventually saving her isn’t too much of a stretch.
I find Cal miraculously crashing into Daniel’s car more deus-ex-machina-ey. He somehow found the time to grab a truck, stash Kira in an out of the way location, find Daniel (who could be anywhere) and slam into him. Oh, and he so happens to have an unregistered camper stashed in the boondocks, you know, just in case.
