So we recently got a 2 years time skip in the recent chapters. Jasmine is 15 years old now. I'm really surprised the author didn't go into details about her current appearance considering that the author took 1 whole chapter to describe Qingyue during the tournament.
Qing yue is one of yun che's waifu.. its a given that she is described with much details.. Jasmine is just a mentor character.. so even if she is replaced by an old man, nothing much would differ. Maybe one day when she got her own arc..
lolibaba mean an old woman (in age) with a kid appearance. is in entirely different meaning with lolicon.