Even though her catchphrase (or catchword) was 'Death', Kirika wasn't necessarily particularly enthusiastic about the idea of someone or something dying. Unless what died/were destroyed were Noise-entities, bethey of the Alchemical variety, Alca-Noise, or otherwise. Under most circumstances when a human (or pet) lost their life to an Alca-Noise, Kirika (and everyone else) considered the loss of life nothing but a tragedy. However, upon learning what the deceased Dursleys had done to the young girl she had surprisingly quickly grown attached to, Halfeti Potter, the blonde couldn't help but find herself agreeing with Halfeti that the demise of the Dursleys was a good thing. While she was glad that the check up revealed that the Dursleys hadn't done anything… intimate to Halfeti, the fact that the young girl suffered from malnutrition and had more than a few bruises and scars on her body made Kirika's blood boil. The check up also revealed that, because of the aforementioned malnutrition, while Halfeti looked like she was about three or four years old, she was actually five and would be six in a few months.
Much to both Kirika and her wife's dismay, Halfeti had to stay at the hospital for at least a week. During which the necessary measuring in preparation for her prosthetic leg was going to be made. While they couldn't remain at the hospital and keep the girl company, mostly because they didn't have to stay at the hospital themselves, it didn't stop them from visiting the girl and even leaving her a few presents on one of the first few visits. One of the presents was a stuffed animal resembling a chubby dog fused with a chainsaw. While it was rather strange, Halfeti couldn't help but find the chainsaw-dog adorable. A pair of presents that Halfeti definitely appreciated due to her love of music was a smartphone of the latest models available and a pair of primarily green colored wireless headphones decorated with a pair triangles on the arch similar to cat-ears and multi-colored lights that could be cycled through with a dial on one of the (human-) ear-covers. Needless to say, a lot of music ended up on one large playlist rather quickly to the point where Halfeti was near-constantly surprised by the music on the growing playlist.
Near the middle of Halfeti's second week at the hospital, the prosthetic leg arrived, got placed on the stump that was what was left of Halfeti's right leg and the physical portion of the girl's therapy and rehabilitation began. Learning how to walk again. It was somewhat painful, particularly when she lost her balance and fell down, and frustrating, but the rehabilitation was working. Slowly but surely. Over time, Halfeti received visits from not only Kirika and Shirabe but also a few of the adults' colleagues. Specifically the happily married couple of Hibiki and Miku Kohinata-Tachibana, the latter of whom had, alongside Shirabe, begun privately tutoring Halfeti in the Japanese language about twice a week each, which happened to be their actual jobs, meaning that Halfeti was estimated to get about four lessons on Japanese a week. Shirabe focused on teaching her the verbal parts of the language while Miku focused on teaching the written parts.
By the time when Halfeti could start to do something resembling normal walking, she had gotten a rather impressive grasp of Japanese language, being able to understand it, read it (admittedly slowly) and have a conversation in Japanese. An admittedly slow one, but the results were what really mattered. Another set of results that Halfeti was unaware of came from a sample of her blood at the labs of S.O.N.G HQ. Relic compatibility tests that showed a result that was amongst the rarest possible in the context of such tests. Halfeti was a whopping ninety eight percent positively compatible with the Priscilla-Relic, which made S.O.N.G's primary scientist in the field of Relics, Elfnein Malus Dienheim, suspect that the girl was likely to be equally compatible with the other three Relics belonging to the set of four Relics that the Priscilla-Relic was a part of. Even if Halfeti was practically all but guaranteed to be able to wield the Scythe of Departure, Elfnein and pretty much everyone else preferred to have the girl fully recover, have her learn how to use and eventually master the Priscilla-Relic in a controlled and safe environment rather than having her do so on a real battlefield with very real danger.