Unless she has some earth in her chart, the temper can be quite unstable... but doesn't last long. Aries are the infant souls of the zodiac, its all about them. They lead, you follow their demands, and give them what they want. Don't argue. No one argues with a baby, so don't argue with Aries - it is pointless. Ironically Libra types have karma with this sign, who will often teach Aries about fairness.
Gee, isn't that a bible verse? Treat others like you would want to be treated. Some people don't get it do they? Some people live by double standards. It's ok if they do something hurtful but if you do it back to them, you are to he one who is evil. It makes no sense. These are always folks who care only about themselves and no one else.