You may have noticed that when talking to Trudy for the first time during Ghost Time Gunfight, the player is granted 50 XP. I always thought this was a little odd, but at the same time didn't think much of it since I figured it was just the game being generous to new players. But then, I was working on a different mod and happened to look at the script. The script is identical to the script used the first time you ever talk to Trudy; when the player is granted 50 XP for completing either Back in the Saddle or By a Campfire on the Trail (depending on if you did the complete tutorial or not):

if (GetQuestRunning VCG03)
 setobjectivecompleted VCG03 40 1
  RewardXP 50
 CompleteQuest VCG03
else
 setobjectivecompleted vcg02 70 1
  RewardXP 50
 CompleteQuest VCG02
endif
StopQuest VCG02
StopQuest VCG03

This script essentially competes either Back in the Saddle or By a Campfire on the Trail and grants the appropriate XP upon talking to Trudy for the first time after the Cobb argument. However, in what in my opinion is a clear bug, the devs presumably copy and pasted that greeting to use for her greeting when talking to her during Ghost Town Gunfight without removing the previous code. There is no logical reason for this script to run during Ghost Town Gunfight, as there is no way for either Back in the Saddle or By a Campfire on the Trail to be active during it. I personally believe this is a pure bug fix and could be included in something like YUP, but since it is a rather big gameplay change it may not be appropriate.