Fundraiser stranger mission glitch

[Anthony]

Hi guys. I know that the stranger mission called Fundraiser is scripted to appear in Saint Denis from chapter 2 to 6. However, I'm currently in chapter 4 and I have never seen the '?' white icon where it is supposed to appear. It should be the shortest stranger mission and, if you miss it, nothing happens (you can obtain 100% in the story mode doing other stranger missions). Anyway, it is stressful not to have the possibility to do this one in particular. If you check on internet you'll find out that other people have this same problem. Let me know if you can fix it

[Foxtrot]

You don't see the ? appear (at least I don't recall it being anything more than a random encounter). 

All you do is get to near where the tailor is in Northwest St Denis and you should hear a lady asking for donations.