Doxing is a form of cyber bullying that uses sensitive or secret information, statements, or records for the harassment, exposure, financial harm, or other exploitation of targeted individual s.
What they did was doxxing.
The location of a family home is always going to be sensitive information.
We should all feel safe in the home we live and sleep in. People will instinctively object to that form of personalised attack.
That is why so so many people tweeted statements saying they objected to her opinions but condemned the 3(4?) people's actions
People may be willing to risk their personal safety but very few would place their family in danger, what they did carried an implied threat against all in her household.
As you pointed out tweeting the image to be seen by their followers would result in likes, publicity and would probably to encourage others to harass her in the same way.
They took the picture down before she tweeted because many people pointed out that their behaviour was socially unacceptable.
I suspect that Sarah Manavis protected her account because the general public were explaining they objected to anybody turning up at a private residence.
I don't see any proportionate benefit of complaining to her employer when she's tweeted something which makes her look thick as can be.
Dont stop her when she is scoring an own goal.