HOUSTON -

A Houston socialite is suing her husband's former mistress for trying to kill her.

Michelle Gaiser has agreed to plead guilty to solicitation of capital murder and receive a 25-year prison sentence in exchange for her testimony against the men she hired to kill Yvonne Stern.

Stern was shot at an apartment complex in the 4500 block of North Braeswood Boulevard in May 2010. Another attempt was made on her life three weeks earlier when shots were fired through the door of her Bellaire home. She was not wounded in that attack.

Gaiser is also expected to testify against Stern's husband, Jeffrey, who has been charged with solicitation of capital murder. He has denied being part of the plot.

Yvonne Stern said she stands by her husband and that they are victims of a fatal attraction.