I hope they don't adopt her. I feel sorry for the child, be she has family that can take care of her, why does Xiaye and Ah Chen have to come to the rescue? They can finally live in peace and now this. Their older son already hates her.....
i hope xiaye will take in wei wei. i think she will be able to help her grow into a good person! also, wei wei already sees her as a mother so it will be less of a problem for her to adopt to xiaye vs mu lingshi. as much as i disliked gu lingsha and qi feng, i do wish for a good ending for wei wei.
As for me, I think it's very good if they take her as their daughter and teach her good things so she can be the great lady in the future because they will influence her with their good behavior, nor like her parents..