Following her miscarriage over a week ago, the still-hospitalized Shayne Lamas has taken a turn for the worse.

"I'm still working from the ICU," the reality-TV star's husband, Nik Richie, wrote on his blog, "This has been the toughest week of my life, but my love for Shayne Lamas has grown tremendously. My wife is a true fighter. Her heart gave out on Valentine's Day and we had to start the rehabilitation process all over again."

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Lamas, 28, "Bachelor" season 12 winner and daughter of actor Lorenzo Lamas, collapsed in the couple's Orange County, Calif., home Feb. 9, and was taken to a hospital where doctors found internal bleeding. The unborn child was lost during surgery.

"Thank you to Dr. Marquez for saving Shayne's life (again)," Richie wrote. "Thank you to everyone for your thoughts and prayers -- they are working! . . . Lastly, a special thank you to Shayne Lamas for not giving up. Press wants her mom back!" he added, referring to their 2-year-old daughter.