To the OP:
Concern #1------assuming that you left her a delivery notice, you made the right choice.
Concern #2------you do not have the right to arbitrarily make an address signature only.
Concern #3------see #2.
Concern #4------you have already stated that the FD was an unsafe DR.
Sounds like you owe this woman an apology.
It is a driver's discretion to DR.
If he doesn't think that it's safe, we have 100% right to ask for a signature and/or leave a notice.
To be honest, half the stuff drivers do leave would fail a DR inspection by being seen from the road.
It gives UPS leeway in charging the driver for a stolen package. No one delivers to everyone's back door (, except
@Indecisi0n)