What happens when the owner kills a multisig wallet?

Question

if the owner decide to kill a multisig wallet (Smart Contract),

1. Is he/she will be able to do kill the contract?
2. If so where does the ether get deposited to?

Answer 1

By default there is no such concept as contract owner. Such concept exists only if it has been coded into the contract.

So it depends on what kind of functionality the contract has.

If by killing you mean selfdestruct, then the selfdestruct function requires an address parameter which specifies to which address all remaining Ethers are sent.