>>280110549
Like why did she create a band? Because of crychic
But if we talk about the mother in general, probably yes

At first people did not pay much attention to the mother, also as to many other things in Mujica. People probably thought that anime just introducing us to Saki's mother. But in mujica not a single thing is shown for nothing, and this is already confirmed by the manga where Saki constantly remembers her mother

If we compare, in btr Nijika also lost her mother and she doesn't seem to care about it, but Saki is definitely still worried about it