In December 1887 , she had a chance encounter with Tchaikovsky in Berlin , at a performance of Berlioz 's Grande Messe des morts .
They were glad to renew their acquaintance , but there was no mention of past events .
In December 1887 , she had a chance encounter with Tchaikovsky in Berlin , at a performance of Berlioz 's Grande Messe des morts , and they were glad to renew their acquaintance , but there was no mention of past events .