Jane had been somewhat lost since Liara had been sent back to, presumably, home. Which was why she'd offered to help Angela save Cosima and the others from The Collector. She needed to do something, she needed to feel useful--she needed to fight, but after the battle she felt... useless. Unwanted and unneeded. Which was why she jumped at the chance to join Alex's party. To get drunk and forget her worries. She didn't have Serrice Ice Brandy, but she'd found something close enough and she'd bought two bottles of it into the apartment.
The party already seemed well under way. She felt out of place. But it was better to be alone, better than to wonder what might have been. She made her way over to the kitchen, set the alcohol down on the counter, and fixed herself a drink. Let me forget about home, Liara, all of it... she thought. Her prevalent thoughts since arriving here had been about home, about the battle that she'd left behind. Now, more than anything, she wanted to set those thoughts aside. It was driving her mad thinking about the things that she couldn't change. Mad.