Final answer:
Ruthie's Jewish faith does not involve praying to San Lazaro, but there are other ways to support her healing.
Step-by-step explanation:
Judaism, the religion followed by Ruthie and her family, does not traditionally incorporate the veneration of saints or praying to specific saints like San Lazaro. Ruthie's mom might explain to her that while her former nanny, Caro, may find comfort in praying to San Lazaro, it is not a practice that aligns with their Jewish faith. She might reassure Ruthie that there are other ways they can support her healing, such as seeking medical treatment and relying on their Jewish beliefs and traditions.