This is not part of your mother's estate and you have no legal obligation to share the funds. Whether or not you have a moral obligation to divide the funds depends on why you were named on the account. If it was your mother's intent that it go to you for some reason, then the money would be yours. If it was just done for convenience sake, then you probably should share. If you do not, it will likely have an effect on your ongoing relationships with your siblings.
Answered on Oct 24th, 2012 at 8:22 PM