i want to do all the alice mclafferty quests but since thier hidden quests i dont know where to go also how do i get the quest for spying on the gun runners for her it wont come up again???

Is her quest unmarked? O_O is it? I don't think it is? And I assume you didn't want to spy on the gun runners and said no? Then you won't be able to do it

The Crimson Caravan errands she sends you on are not unmarked. They are "You Can Depend On Me" and "Pressing Matters". You have to turn down the Gun Runners corporate espionage job.

i did turn it down but how do i get it back??

Once you turn it down there's no getting it back.