ANGELA WEISS/Getty Images Alec and Hilaria Baldwin in November 2019
Hilaria, 37, took to her Instagram Story on Wednesday — just one day before husband Alec Baldwin's sit-down interview with ABC News' George Stephanopoulos airs — to talk about how "heart wrenching" the talks with her and Alec's children have been since the fatal shooting took place in October.
"I've had to have some conversations, explaining recent events to my oldest children recently," Hilaria began. "You can imagine how heart wrenching it has been. I'm grateful to The Child Mind Institute, for guiding me. I'm grateful to my friend, Anne, for encouraging me to reach out to them."
"Sometimes, I just freeze, knowing I'm the adult, who must guide my family, but so lost as what the right direction is," she continued. "There is no manual we are provided. Sometimes I catch myself, surprised that I'm in the adult position and I'm like: shouldn't I know what to do??"
Never miss a story — sign up for PEOPLE's free weekly newsletter to get the biggest news of the week delivered to your inbox every Friday.
The yoga instructor went on to talk about how "grateful" she is for a book that helped her discuss "adult emotions" with her kids, writing that It's Okay To Not Be Okay: Adults Get Big Feelings Too by Danielle Sherman-Lazar helped her "explain the tremendous sadness and heartbreak" to her children.
"You have no idea how much all of your kindness, love, and support mean. Yes, you who are reading this. I know how lucky I am to have you," she concluded.
For more on Alec Baldwin's interview with George Stephanopoulos, listen below to our daily podcast on PEOPLE Every Day.
Hilaria shares six kids with husband Alec: daughters Carmen Gabriela, 8, and María Lucía Victoria, 9 months, and sons Rafael Thomas, 6, Leonardo Ángel Charles, 5, Romeo Alejandro David, 3, and Eduardo "Edu" Pao Lucas, 13 months.
RELATED VIDEO: Alec Baldwin Seen Distraught After Accidental Shooting on Set of Rust Movie, Killing Cinematographer
In addition to talking with her children, Hilaria has been supporting her husband, 63, on social media ahead of his interview with Stephanopoulos, 60, which airs on Thursday, posting a picture of the couple on Wednesday with the caption, "One foot in front of the other."
On Wednesday, Stephanopoulos previewed a portion of the sit-down during Good Morning America, calling their talk the "most intense" interview he's ever done.
"It is so raw. I mean, as you can imagine he's devastated. But he was also very candid, he was very forthcoming, he answered every question. He talked about Halyna Hutchins, talked about meeting with her family as well," said Stephanopoulos. "He went through, in detail, what happened on set that day. I have to tell you I was surprised in many places over the course of that hour and 20 minutes that we sat down yesterday."
In a video preview of the interview, when Alec was asked if he pulled the trigger on the gun that killed Hutchins, he said, "The trigger wasn't pulled. I didn't pull the trigger. I would never point a gun at someone and pull the trigger on them, never."
The preview didn't include Baldwin's explanation as to how the shot was fired from the gun.
Baldwin's ABC interview will air on Thursday at 8 p.m. EST and will begin streaming later that evening on Hulu.