Ask Amy: Should I share my inheritance?

Dear Amy: My mother recently died, and I’m expecting a relatively substantial inheritance from her (my dad died several years ago).

My younger brother, also not living, has two adult children.

My mother (who was a difficult person) originally told me she intended to halve the inheritance between my brother and me when he was still alive, but after he died, she then decided to pass her entire inheritance to me, giving nothing to her grandchildren (who are my brother’s children).

These granddaughters were good to her.