Since this article describes Romy as so distraught after finding her father that she had her roommate call 911 I suspect the roommate, the reporting person, helped meet responding officers at the home.
The roommate with her helicopter view, not the Reiner family view, I believe succinctly summed up the situation for the officers as she sees it; Nick is dangerous.
Romy had "fled the house" called Billy Crystal finding out about her Mother from emergency responders when she returned.
This Guardian article is a summary of the New York Times article which is behind a paywall for non subscribers.
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The therapist contacted their daughter Romy Reiner, who lives nearby, who entered the house and found Rob Reiner’s body. The Times said that Romy “fled the house in anguish” without realizing that her mother’s body was also inside, and that her roommate, who had accompanied her, called 911. Emergency responders then discovered Michele Singer Reiner’s body.
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The person quoted by the Times also disputed several details that had previously been reported. He said that Romy had told emergency responders that Nick lived in a guesthouse on the property but did not name him as a potential suspect at that time.
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The source also disputed widely reported suggestions that Rob and Michele Singer Reiner had been particularly “apprehensive” over Nick’s behavior in recent weeks, saying the family were “accustomed to working through [Nick’s] problems together”.
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The source said that while he was not in a position to say whether Rob had “rebuked” his son for disruptive behavior at the party, suggestions the pair had a “heated argument” were not correct.
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An unnamed source told the New York Times the Reiners’ daughter, Romy, had discovered only her father’s body, and disputed reports the couple argued with their son, Nick, at a party the previous evening
www.theguardian.com
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Accompanied by a roommate, Romy went to open the gate and check on her parents, where she found her father deceased. She quickly fled the house, had her roommate call 911, and reached out to Rob's longtime friend, Billy Crystal.
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Rob Reiner's Daughter Had No Idea Her Mom Was Dead After Discovering Dad's Body, Family Friend Reveals
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Crystal and David were spotted separately at the Reiner's’ home on Sunday, where a neighbor told
ABC 7 Los Angeles that Crystal “looked like he was about to cry” while visiting. Both stars stayed briefly before leaving, according to TMZ.
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Crystal’s rep
denied reports that he saw the Reiner's’ bodies during his visit, saying that Crystal and his wife were not allowed that close to the residence.
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Crystal and other famous close friends of the late director and his wife released a tribute to the couple on Wednesday.
www.thedailybeast.com
Imo, Romy was so traumatized at the time she didn’t know what to think having found her father dead then the news that her mother is dead also. I think she would be still be in a paralyzing state of disbelief.
all imo