This one is pretty simple, if you managed to get the safe code from the detective while doing the side quest Motherly Ties
, if you were unable to get the safe code, you can find it under the spoiler.
After retrieving the bracelet and go back to your apartment to finish the quest, after you go through all the dialogue, the option to give Casandra the bracelet or keep it pops up.
Nothing happens if you give it to her, so just keep it.
(Maybe even sell it for more credits ha ha)