Consider a monitored alarm system. They can be set for different modes and one mode allows you to be home, but still have the perimeter monitored. One option offered by many alarm companies is video, so she can see what is going on outside without opening the door. Anything else that you can do to make the house less of a target would also help like lighting, landscaping, locks, doors etc. Remember you want to “harden the target” so the bad guys will go somewhere else.
A major source of objection to a free economy is precisely that it ... gives people what they want instead of what a particular group thinks they ought to want. Underlying most arguments against the free market is a lack of belief in freedom itself.
- Milton Friedman