Where is Luke's mom after defeating the Final Boss on the Lost Ship (possible spoilers)

olibuba

Green Slime
After defeating the final boss, I wanted to talk to Luke's mom and brother... for obvious reasons. I checked back in Pillar Mountains (I don't remember where they lived). But wasn't able to find them in any obvious places. Just want to find out before I go into the tower.
 

res7less

Jumpkin
They were usually hanging around in Evergrind City's hat store but right now they are conveniently missing.
 
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