I located two possibilities.
1. Maria Cejka arrived 10/11/1890 into Baltimore aboard the Munchen out of Breman, Germany. Est. Birth 1872.
2. Marie Ciejka arrived 4/14/1891 into Baltimore aboard the Gera our of Breman Birth date: 1871, estimated age 20. This would be one month before her marriage to Joseph Mulacek in Cleveland on 5/11/1891. The dates due match your information and also match the 1910 census where she said she arrived in 1891. Misspelling on the name, but that was common.
Hope this helps. Contact if you have any questions
cejka@satx.rr.com Gary Cejka