As the film progresses Melanie reunites with her Uncle Jeb (Hurt), though as she is visibly an alien there is
an obvious lack of trust.
If you combine this with
an obvious lack of trust and general dearth of reliable information on enemy capability, both sides end up engaging in an arms race, for fear of being taken over by the other.
Not exact matches
That wasn't completely
obvious at the start, but it has become
obvious that the reason we are having numerous small behavioral issues is a result
of a
lack of trust in being touched or handled.