It's for that I say "not like GIGs"
More like Highway Man, you have a (very) vague "clue" where her "son" have probably disappeared (like "he had to go to school at that address", so you have to look everywhere between school and home), you have to search clues in the area (with no quest area marker), maybe ask tramps hanging out nearby if they have seen something (maybe even you will need to convaince them, paid them,punch them...).
But obviously not like GIGs where you simply have to rescue people or even not like with the Scavs BD during Disasterpiece. Not interesting at all
Edit :
And it could go on a lot of interesting stuff like (some ideas) :
- He was kinapped by Scavs (so you have to investigate somewhere in a Scavs hideout), discover that scavs have "sold" him to Biotechnica for make experiences on humans (so you have to infiltrate Biotechnica facility).
- He was kinapped by "unknow" poeple who have weird blue eyes... So maybe it's the same organization as the Peralez (you have to find where, who, why,...)
- He's not as little as who said his mom. He have 16 years old and decided to join Arasaka "army" (like Goro). You also have to know where and how to get out him.
In short, it's not the "good" scenarios that are missing, I think.