^From what I read she want time for her family. I presume the schedule of AAA is too busy for that. Being in solo means that she can manage her time and have more time as she doesn't have to do big tours all over Japan and all the rehearsals.
I don't mind at all that she thinks about herself. Having a baby doesn't mean that she must stop to be a singer and leaving a band doesn't mean that she must stop to sing. She devoted herself to AAA during +10 years. She totally deserves to do what she want to be happy in her personal and professional life.
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