You can find the free Charm in the game’s store for 19 Facebook Credits each ($1.90). As you’ll learn there, each Charm gives off one of four exclusive flower bouquets, with your goal being to collect all four. However, why buy what you can receive for free?
Head over to the game’s free gifts page, and you’ll see the Mother’s Day Charm as the first item option. Sure, this only results in one of your neighbors receiving the Charm, but by initiating the process, it’s likely that your friends will return the favor.
Make sure to choose your option of choice fast – while the Charm is still available at the time of this writing, it’s presumable that, as a holiday item, it won’t be around forever. Don’t miss your chance at those four flower bouquets!