Died Ivanov, with whom Gavrilova was

Died Ivanov, with whom Gavrilova was

Ivanov died, with whom Gavrilova was in a registered marriage. Ivanov was dependent on her young daughter Gavrilova from her first marriage. Gavrilova´s ex-husband was charged for child support. However, for three years no money was received, and the girl’s father was wanted in this connection.
Can the young daughter of Gavrilov claim the inheritance left after Ivanov’s death? If so, under what condition? Do I need to go to court, and if so, why? What types of civil proceedings are provided by applicable law?

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