Make it so she'd always been a male boar anthro, Jen's husband.

...hold on a second. Paula realized that she wasn't thinking big enough. After all, she was already pretty satisfied with how big and lazy she was, but there was the issue of Jen. Despite the coin altering their history, Paula didn't really find her sexy. She just wasn't into girls, and she didn't want to turn Jen back into Jed. No, there was a much better solution. Holding the coin more tightly, Paula said, "What if I had been born a male boar-person, and I was your husband, Jen?" Just as she'd expected, the coin flashed brightly and she suddenly found herself with quite the different body. She was just as fat, just as porcine, but now her boobs looked and felt different, not nearly as sensitive, and they were smaller. Really, they were just the fatty moobs a big guy would have. Her whole body was hairier, with a full mat on her chest, a forest under each arm, and enough pubic hair to make finding her junk more difficult.

Or at least, it would have been if she'd still had a pussy. Instead, Paula now had a thick, meaty cock and a pair of porky testicles. Looking over her changed body the new memories starting flooding her and Jen's minds: Paul was an uncouth, bossy, crass anthro boar who worked a security job where he watched security cameras all day. It was for the best anyway, with his awful smell and his terrible manners, few could stand to work with him directly. Jen, his wife, was the only person he ever showed much affection to, and even then he never held back around her, something she'd always apparently liked, enough to be his housewife anyway. Paul shook his head, still getting used to what he'd done, then smiled at Jen. "You really want this coin back?" Jen nodded fervently, and Paul laughed. "Alright then..."