Take a look at the tire where the rim is bent. Is the tire cut or gouged? Does the sidewall seem OK in that area (not bulging, etc)? You may want to remove the wheel to closely inspect the tire. Keep a close eye on it for a while. If you aren't comfortable doing any of this, take it to a shop you trust and pay them to do it.
The tires on a Mirage (Dunlop Enasaves) are extremely light duty and they don't have a lot of meat in the sidewall. If the tire has been damaged, get it replaced.
If the lip of the wheel is bent a little, that can be bent back into shape. But if the wheel was hit that hard, have a tire shop spin the wheel on a wheel balancer to make sure it's still straight. The cheapest source of a new wheel and/or hubcap is going to be eBay or a local auto recycler (aka junk yard).
Now would be a good time to have your alignment checked. Even if your Mirage only has a few thousand miles on it, many Mirages aren't properly aligned from the factory.
View my fuel log 2015 Mirage ES 1.2 manual: 51.3 mpg (US) ... 21.8 km/L ... 4.6 L/100 km ... 61.7 mpg (Imp)