To see a broken mirror, foretells the sudden or violent loss of some one related to you.
To see others in a mirror, could denote that others will act unfairly towards you to promote their own interests.
To see animals in a mirror, could denote disappointment and loss in fortune.
For a young woman to break a mirror, foretells unfortunate friendships and an unhappy marriage. To see her lover in a mirror looking pale and careworn, could denote death or a broken engagement. If he seems happy, a slight estrangement will arise, but it will be of short duration.