If you enlarge the 1860 census page for Elsaac Adams, you will see that what looks like "Sencre" is actually "Senora." Compare the final letter with the final a on the listing for Lucretia below, and they are the same. This is a transcription error.
Are you certain that the Lenny in the 1860 is Malinda "Linnie" and not Leonidas? Both are named in the Application for Administration of Elsaac's estate.
If it is Leonidas, then where was Malinda in 1860. Information that I have (but not research done, or verified, by me) shows both Malinda and Lenny born in 1859. Could Linnie and Lenny be twins?