Comma before -ing word

Aloha,

Am I right here?

Consider this sentence: “She saw him walking down the beach.”

If I put a comma after him, it means that SHE was walking down the beach, right?

Yes, that’s right.
And without the comma, ‘walking down the beach’ refers to ‘him’.

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[size=75]“It is a fine thing to be honest, but it is also very important to be right.” ~ Winston Churchill[/size]

Thank you so much =)

I am interested in the comma involved case. Does it mean, without a context,

  1. She saw him and (then) walked down the beach. Or,
  2. Walking down the beach, she saw him. ?

With a comma it means:
she saw him while she was walking down a beach.

Without a comma it means:
she saw him as he was walking down a beach.

Thanks for the clarification.