Anya reached out to the most familiar link that she found. This link was pushing her away, however, with everything else's pushing her stronger, she was naturally brought to this link which she touched.
At first, it tried to reject her. However, since the host's body was already consumed by her, it soon became submissive. She didn't know how long it took but it felt like she was trying to tame an animal, only that this animal felt connected to her. It was just skeptical if it's compatible with her and sure enough, it was not.
However, the knowledge that Ayensi gave to her did not go to waste. Instead of forcing this link to connect to her, she instead adjusted herself to give way to it. This was the unorthodox part she would change herself. This is where the unique method comes in.
Instead of permanently changing herself, she would use her Spirit Energy.