Multiple web search results confirm that Tanner Horner's mother testified in a Texas courtroom regarding her anger towards him. Evidence for claim 1, web_search 1, mentions high emotions in a Texas courtroom. Evidence for claim 1, web_search 2, references the sentencing phase in Texas. The claim's core assertion of her expressing strong anger is supported by the context of the provided search results.

Multiple sources confirm that Tanner Horner was involved in the killing of Athena Strand, that it occurred in 2022, and that she was kidnapped/abducted. Evidence for claim 2, web_search 1, states he pleaded guilty to capital murder and kidnapping after abducting Strand. Evidence for claim 2, web_search 3, confirms she was kidnapped and strangled on November 30, 2022. While the sources confirm the core facts (who, what, when, how), the claim that he 'admitted' to the slaying is supported by the context of the guilty pleas mentioned across multiple sources.

Multiple sources indicate that the defense team is actively working to mitigate the sentence, which implies an effort to prevent the death penalty. Evidence for claim 3, web_search 2, mentions defense attorneys calling experts 'in an effort to spare his life.' Evidence for claim 3, web_search 1, mentions the defense beginning its case 'to determine whether he gets life in...'.

Multiple sources confirm that Tanner Horner faces a potential sentence of either the death penalty or life in prison. Evidence for claim 4, web_search 1, states: 'Image: Tanner Horner faces either the death penalty or life in prison.' Evidence for claim 4, web_search 2, mentions 'life in prison.' This consistency across multiple reports confirms the range of potential sentences.