Hi Chris,
Check the 1900 Census for Minnesota, Ramsey County, St Paul. You will find that they had another daughter, Mary, born 1885.
I was checking to see if your Thomas Krochak was related to my John Krocak (DOB 10 Mar 1835, Mazi Mosti, Veseli, Bohemia), as John had may children, and so there are many Krocaks here in Minnesota. But unless they were related in Bohemia, and came to Minnesota separately... Maybe John is Thomas' uncle? You don't have any more info on Thomas' family in Bohemia, do you?
Roy.