If Jennifer Love Hewitt ever needed a job to fall back on, taking calls as a 911 dispatcher would not be high on the list.

“I’d be such a nervous nelly,” Hewitt insists. “I’d panic. I’d be the worst 911 operator. What they do is amazing. The pressure they are under and their ability to stay calm so that they can get someone the help they need is incredible.”

Hewitt’s own inabilities aside, the actress can at least play the part. This season, she has joined Fox’s hit drama “9-1-1” as Maddie, the sister of firefighter Evan “Buck” Buckley (Oliver Stark). Her character becomes a 911 dispatcher to restart her life after leaving an abusive relationship.

The role marks Hewitt’s return to TV after nearly three years away — an intentional break motivated by the birth of her second child, Atticus, now 3 (her daughter, Autumn, will be 5 in November) and grief over her mother’s 2012 death.

“9-1-1” also returns Hewitt to Fox almost two decades after her breakthrough role in “Party of Five” and its spinoff, “Time of Your Life.”

Q: What prompted your acting break and did living life off camera enhance your work?

A: I needed to take some time for myself and to grieve my mother. I needed to become a new mom; I needed to learn how to be a wife. I’ve really enjoyed the break, and I feel like now, having gone back into acting, it’s really done a beautiful thing for me in that it’s made everything that I do in my acting/entertainment life not less important but less like, “It’s everything all the time,” like it used to be.

I also feel like I have new things to pull from as an actress. I think it’s so odd as actors that we, especially kid actors, which I was, we’re expected to pull from all these life experiences that so many of us haven’t had. I remember I directed an episode of “Ghost Whisperer,” and I had to work with a girl who had never been in love before. And she was doing a story all about love. And she was like, “I’m sorry, I just don’t know what it is, what it feels like.” And I was like, “Oh, my God. Let’s go to lunch.” I feel like I acted for a lot of years from my heart but not really, truly understanding some of the things that I understand now.

Q: As a young actor, was taking a break even something you could have fathomed?

A: It’s a big reason why I never want to college. I was afraid that I was going to lose it all. I was afraid to do that. It’s for sure scary.

Q: The death of a loved one can sometimes prompt people to be more fearless; for others, it can cause them to retreat. How did it weigh on you?

A: I went into a very fearful place. I started getting a lot of anxiety, and I’ve had anxiety since (my mom) passed. It’s still something that I deal with on a daily basis. I try not to give it to my kids. But yeah, it’s been really hard for me.

I think, initially, I went into survival mode. I knew that I couldn’t sit indoors and just grieve her. I needed to change my surroundings, so I moved. I got rid of some stuff. I just needed a change. I traveled a little bit — she loved to travel. That wasn’t something that I had done before. I did some things that I was afraid of. But “Phase Two,” for me, I was real afraid. I remember every time the phone would ring, I’d be like, “Oh, my God, someone else …”

I lost my grandmother a little less than a year after my mom, so that was hard. She was the other significant female in my life. But when my daughter came around, and I got pregnant, this really beautiful thing happened where I went, “Oh, but there’s life too!” The one that moves you forward is the trust and the non-fear place, and the one that holds you back is the fear place. And so I just tried to move forward.

But I think because I was so fearful, for me to act and to have to tap into those things not in a safe place, would have been really hard for me. So I do think that that was part of why acting scared me at that time. Because I just wanted to be in joy. I didn’t want to force myself to go deep into that place.

Q: Can I ask: When was the last time you watched “Party of Five”?

A: Probably at that time. I know you can stream it, and there’s part of me, during the very few moments in my house that I have to myself, where I am like, “How weird would it be if I just sat down and watched ‘Party of Five?’”

Q: What’s it like knowing that the show has reached reboot status? And what are your thoughts on Freeform’s plans to remake it as a story about immigration?

A: It doesn’t surprise me that they would do something so smart and lovely with that show. It’s going to be great. But it does, for a second, make me go: “Oh, God, I’m old enough that something is being rebooted.” But I’m actually really excited to see it.

Q: Are you someone who would want to be part of a revival? “Ghost Whisperer,” perhaps?

A: Sure, yeah, if it was (done in) a unique, interesting way. I think so. Here’s the problem with a “Ghost Whisperer” reboot: I am not good at stepping away from that show in a smaller aspect. So a reboot, where it’d be all young people, and I’d be the old one saying, “Get out of here, you don’t talk to dead people, I talk to dead people!” — I’m not into that. If they’re going to redo it, then I have to go back and be the ghost whisperer because I am not giving up my “Ghost Whisperer” throne.