You can't because she will never move If you have Landorous you can mabey hope it helps
Take Tornadus and Thundurus to Abundant Shrine. A wild Landorus will appear.
Once you catch Tornadus, and get Thundurus from a trade, then you can visit the shrine to make the third member of the trio, Landorus, appear.
You cannot obtain Thunderous in Pokemon Black, only in Pokemon White, since it is game-specific, like other legendaries. As for Landorus, you can find it in the Abundant Shrine.
I'm inferring you meant Landorus. You'll need Tornadus from the Pokemon Black version and Thundurus that you would have in Pokemon White, then take them to Abundant Shrine and interact with the shrine. Landorus will fly down to encounter you.
First, you need to get tornados and thunduros, then you must have those two Pokemon in your party and go to the abundant shrine. (if you have white, you need to trade tornados from black, and if you have black, do the same thing except for thunduros.)
Abundant Shrine
Abundant Shrine. =)
It can be found on Route 13 or at the Abundant Shrine.
At the Abundant Shrine. You'll have to use Surf.
you can find them in pinwheel forest, lostlorn forest or abundant shrine
Go to the Abundant Shrine and search for it.
I got my ditto from abundant shrine but there is some in giant chasm
TM35 (Flamethrower) is located in the Abundant Shrine.
You must beat N and his father before you can even get close to abundant shrine.
Take Tornadus and Thundurus to Abundant Shrine. A wild Landorus will appear.
First catch Thunderus then Tornadus then go to Abundant Shrine.
In Abundant Shrine (Bring Landorus Therian Forme).