Complex sentence: From the beginning, the audience is shown the involvement of a supernatural girl, but Yoshimi only gradually believes it; moreover, her building hysteria could lose her the right to keep her daughter, so her lawyer pressures her not to panic.
Split into simpler sentences: From the beginning, the audience is shown the involvement of a supernatural girl, but Yoshimi only gradually believes it. Her growing hysteria could lose her the right to keep her daughter, so her lawyer pressures her not to panic.