1. Since you were able to import the seed and right address and balance are showing then yes you got it right.
2. Yes both wallet will definitely reflect your balance, because the seed phrase can be in multiple wallets at same time and all can do anything to the coins there. You need to create a new seed phrase on sparrow and then move all transactions there through sending them.
3. My advice is to create a new wallet on sparrow but definitely on an airgapped device for two reasons. First the wallet has gone online which means it might have been compromised without you knowing and the hacker can still have access to it even if you import to sparrow wallet and delete trust wallet
Secondly trust wallet is never advisable because it is closed source so are the seed phrase generate from them because we don’t know how it is saved maybe the wallet has the seed phrase through back door you wouldn’t know. So the best is to generate a new seed phrase using an open source wallet.
2. Yes both wallet will definitely reflect your balance, because the seed phrase can be in multiple wallets at same time and all can do anything to the coins there. You need to create a new seed phrase on sparrow and then move all transactions there through sending them.
3. My advice is to create a new wallet on sparrow but definitely on an airgapped device for two reasons. First the wallet has gone online which means it might have been compromised without you knowing and the hacker can still have access to it even if you import to sparrow wallet and delete trust wallet
Secondly trust wallet is never advisable because it is closed source so are the seed phrase generate from them because we don’t know how it is saved maybe the wallet has the seed phrase through back door you wouldn’t know. So the best is to generate a new seed phrase using an open source wallet.
Thanks to all who replied! Appreciate the quick responses!