How did they furnish Jen's new home?

Me too. Somehow I missed how that happened. Can anyone catch me up?

They probably took the stuff from his apartment since he had furniture.

With the stuff from him apartment. It was implied -- by the fish over the TV, the weights out on the terrace, non-feminine mis-matched furnishings. You could tell by her 'throw pillows' & her 'fiance' shopping spree that she'd have a different apartment.

Also - the comment "Thanks Dad - I was going for the sweaty locker-room feel." when her Dad complimented the apartment. It's obvious it was HIS stuff.

They furnished her home with Vince's rag-tag stuff when he moved in with her.

Here's lookin' at you, kid!