‘I‘m facing an ethical dilemma’: My widowed mother is cutting my step siblings out of the family trust. Do I have a responsibility?

https://www.marketwatch.com/story/im-facing-an-ethical-dilemma-my-widowed-mother-is-cutting-my-step-siblings-out-of-the-family-trust-do-i-have-an-ethical-responsibility-59e60ffb?mod=mw_rss_topstories
“My mother has now hired an attorney to revise the trust and remove her late husband’s children as beneficiaries.”…