I do believe save data is stored @ \LF\Bulk\Data\Local
I don't have LeapPad 2, but I do have and Ultra
How the system structures the saves from what I see is as followed.
Name="Adventure Sketchers"
PackageID = MULT-0x0023000A-000000
ProductID = 0x0023000A
Then it's save will be either be \LF\Bulk\Data\Local\0\MULT-0x0023000A-000000 or \LF\Bulk\Data\Local\0\0x0023000A (Assuming 0 is the profile you are wishing to backup)
You will see the folders 0, 1, 2, All (on an Ultra you will also see a 3)
They correspond to the profiles of the device.
To confirm you want to browse the correct profiles saves you can check profile.dsc or profile_private.dsc or profile_rio.dsc and open the with a text editor (notepad, wordpad, notepad++, etc)
You will see something like this:
profile.dsc
Code:
ID=0x0
Name=Josh
NickName=
Points=0xC
Grade=0x6
Badges=0xC
Tokens=0x1
BirthMonth=0x9
BirthYear=0x7D1
Gender=0x0
profile_private.dsc
Code:
ID=0x0
Name=Josh
Grade=0x6
Badges=0xC
Tokens=0x1
MinGrade=0x000000FE
MaxGrade=0x00000008
MultPerm=1
profile_rio.dsc
Code:
Name=
RealName=Josh
ProfilePicture=/LF/Bulk/Data/Local/0/pic.jpg
Theme=/LF/Bulk/Downloads/PHR1-0x00270008-200001/
Background=/LF/Bulk/Data/Local/0/user-port.jpg
BackgroundLand=/LF/Bulk/Data/Local/0/user-land.jpg
Grade=6
BirthMonth=9
BirthYear=2001
Gender=0
Tokens=1
Parent_AppCenterShow=0
Parent_AppCenterPasscode=0
Parent_AppCenterWishlist=1
Parent_AppCenterPrice=1
Parent_WebBrowserShow=1
Parent_AllowP2P=1