DSi XL wont read games without pushing on them.

so my little sister put the cartridge in her ds backwards (dont fault her she is only five) and to make it worse my mother proceeded to dig the game out with a pair of scissors (ouch right). so now the ds no longer detects inserted game catridges unless you push down on them and anyone with moderate experience with a ds knows that will eject the game so you see the delimma. my thought was that when she put the cartidge in backwards she must have pushed sometihng down i dont really know can someone please help or give me an idea before my mom has to buy a new one.