To freeze in fear or with fear? Sources are misleading
It depends on what causes the fear and the nature of it's 'onset'. If something is, for example, 'frozen with fear', it has just been frightened; the fear caused the freezing. If something was frightened some time ago, and the frozen-ness has gone on for some time, the same thing can be 'frozen in fear' - the freezing is a state that can be explained by a continuing state of fearfulness.