In my opinion none of your choices is going to work. I'm guessing that this is what you are trying to say: ... standing on the street (just) a block away.
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New2grammarThanks CalifJim for your reply.Perhaps you can say "standing a block away..."
Do you think 'standing on the next street over' is acceptable? If yes, where is the street located, and is it visible from the woman's original location?
Do you think 'standing on the next street over' is acceptable?Yes. To follow up on your other question, I would say that it is not visible from the woman's original location (unless there is a very unusual arrangement of streets with only a park with low-growing bushes between the streets, for example).