Does the widow who married her children's paternal uncle receive the same reward for raising them?

What the sister asking the question is doing by caring for orphans is a great act of worship. The greatness of the reward is commensurate with the effort she expends. Marriage does not diminish this reward. Rather, it is better for a woman to marry if her husband dies, especially if she needs it or fears temptation. If the husband is a relative of the children, such as their paternal uncle, he may assist her more in raising them. The hadith that mentions the virtue of a woman who devotes herself to her orphans applies when marriage distracts her from their care. However, if marriage does not distract her but rather helps her, her reward is not diminished. Many women of the Companions married after the death of their husbands.