As Houston's daughter, Bobbi Kristina Brown, remains hospitalised, the family has been praying for her but in the meantime they have taken a moment to honour their late relative, reported E!Online.
Tina Brown, Houston's sister-in-law, posted on Facebook a message about the Grammy winner.
"I miss you MY sister... Rip... I miss you sis, like crazy!," she posted, adding she is "feeling heartbroken" in the status. She also included several photos of Houston.
Kristina's cousin, Jerod Brown, posted a lengthy message in honour of the 'My Love Is Your Love' singer and included the last photo he ever took with his aunt.
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"In life we forget to take a few more photos, share a few more laughs, shed a few more tears, overcome a few more struggles, mentor a few more people," he added.
Shayne Brown, Houston's nephew, wrote about his restlessness in anticipation of the tragic anniversary.
"Interview at 6am but unfortunately I cant sleep way 2 much on my mind," he wrote. "So room service it is..."