Got my reputation up to Liked with them and done all the quests that give FotA reputation except The Whitewash so I decided to give them a load of Fixer and MedX and got my Rep to Idolised

Judy doesn't give me the safehouse key

Checked the wiki. I've completed the deal where the Garretts supply the FotA with alcohol but Judy never offered to sell me magazines. No relevant conversation options seem to be available.

Any suggestions?

Think you also need to complete High Times (think it's called that) where you stop two people being addicted

Done that

I think I've done all the FotA quests plus most of those that affect FotA Rep like That Lucky Old Sun