The Lotus Blossom Sect was incredibly impressed with the performance of Jen's new techniques, but it was the ability to summon a large number of seemingly living target dummies to fight against that they were most intrigued by.
They hadn't realized that Luna could summon humans as her Golems, and it opened a huge realm of possibilities for their training.
They always had the most problems when they were facing other humans, not the various demons and beasts that Luna usually summoned, so if they could train against human targets that they wouldn't feel bad about going all out on, they could test a lot of theories in practice, without their lives being in imminent danger from the very first time that they tried.
Jen rejoined the group now that her battle was over so that Penny could heal and refresh the energy loss and the few wounds she had taken.