The question says that the deceased lived in the Philippines, but the first question is whether they died domiciled there, or here in England & Wales. If they died domiciled in the Philippines, then (a) there may be no need for a grant, as succession to their movable property will be governed by Philippines law, including the chose in action being their right to an inheritance from their late mother’s estate, and (b) the right to a grant, if needed,