My mother was co-owner of my late grandmother’s bank account. Should she share the money with her siblings?

“The will stated that the estate was to be divided equally among her children.

Source: [MarketWatch](https://www.marketwatch.com/story/my-mother-was-co-owner-of-my-late-grandmothers-bank-account-should-she-share-the-money-with-her-siblings-e54ed4df?mod=mw_rss_topstories)