Is the stepson entitled to a share of his deceased stepmother's wealth, which was originally her husband's pension and then devolved to her after his death?

The money a woman receives from a pension is her exclusive property, and no one is allowed to dispose of it except with her permission. If a woman saves from this pension or leaves another inheritance, then after her death, it becomes the right of her heirs, and the husband's heirs have no share in it. The husband's son does not inherit from his stepmother unless she bequeaths something to him.