Because Baoqin is lively and beautiful, it happens to be the type that Jia Mu likes.
Ancient old ladies often liked young and beautiful women, which were pleasing to the eye. It is said that Cixi also often summoned Miss Gege of the clan family to sit in the palace, and every time there was a jewelry reward. Baoqin happens to be the most beautiful of the four new girls, and even Tanchun says that "even his sister and these people are always inferior to him", which is in line with Jia's mother's aesthetics.
There is no detailed description of Li Wen Li Qi's appearance and character in the work, which is certainly not as good as Baoqin. Xiu Yan has a calm personality, which is another type of beauty, not as dazzling as Baoqin.
In addition, Xiu Yan is Mrs. Xing's niece, and Mrs. Xing has just angered Jia's mother by begging the mandarin duck, and even Xiu Yan has been affected. Before Wang Xifeng treated her well, didn't he also go through "cold eyes"? And here in Baoqin, there is no such minus item.
In summary, Jia's mother likes Baoqin, and it is a matter of course.
Like is like, but let Mrs. Wang recognize her daughter, and want to match Baoyu, these are two other things. Not long after Baoqin came, it "snowed Pearls", so he got a chirrel, which was early winter; And asking the eight characters, with the meaning of matching, is to step on the snow to find plums, it is midwinter. It's been at least a month or two.
Moreover, it can be seen from the joke between Baochai and Daiyu that god brothers and sisters cannot get married. Therefore, when Mrs. Wang recognized Baoqin as her goddaughter, Jia's mother did not consider "matching" at all. It was only later, when I saw that in the snow, a "golden splendor" and a "red gorilla felt", the color matching was really beautiful, that I accidentally moved this idea. Of course, there is no decision, because there is still Daiyu, but as a "reserve talent" to investigate, what if Daiyu does not live to be an adult and get married?
All in all, Jia Mu's kindness to Baoqin is an old man, and her liking for young and beautiful little girls has no deeper meaning. It is neither a demonstration to Baochai, nor does it mean that Daiyu has been abandoned.