Complex sentence: She, too, entered the State Conservatory, where she completed both graduate (1987) and post-graduate (1991) studies; it was at the Conservatory she met the young Kasparov.
Split into simpler sentences: She, too, entered the State Conservatory, where she completed both graduate (1987) and post-graduate (1991) studies. It was at the Conservatory she met the young Kasparov.