Seagulls don't like smelly fish.
If a fire engine was ever required in an emergency it would have to stop at least 250 yards from our house.
The full time houseowners all move their cars & yes we have tried talking to the offenders & Gardai. It's a waste of time.
I would imagine if in the case of an emergency a fire engine tried to come to house the cars would be moved
to the op i cant really suggest a likely answer other than confront her or to park outside her house across both parking spaces.