What's the best to console a woman that lost her only child?

A family friend just lost her 26 year-old son to sudden cardiac arrest last week. She's 65 years old and he was her only child. Years ago he was her miracle baby (giving birth at age 39) because she's been struggling to get pregnant for many years and treatments failed on her. Then one day her husband and her were able to conceive naturally.

Now her miracle is gone and she's been talking about not wanting to continue with life. She doesn't want to speak to anyone. Is there a way to console an older woman that lost her only child?

What's the best to console a woman that lost her only child?
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