I Have Plans
Some people have relatives who insist that they must always be rescued immediately, no matter where they are or what they are doing. This can be the case regardless of where they are or what they are doing. If you are going to be completely serious about this topic, it appears that your current plans will need to be scrapped.
We would not interrupt our intimate evening to help a third party, regardless of whether or not we are related to each other. It is possible for them to use public transportation, and we are aware that they have other friends who would be happy to help them if they expressed a need for assistance.