Has the Sienna Miller Rebrand stuck? I think it worked, sort of. Sienna is no longer a constant in the tabloids, British or American, and she seems to be working consistently, at times to great acclaim. I think she’s living most of the time in New York too, and she and Tom Sturridge co-parent their daughter Marlowe pretty successfully. I say that because I hear about any issues between them, and they seem to still get along pretty well and spend time together with Marlowe. But it’s not all sunshine and roses for Sienna – apparently, Marlowe is a “petri dish of germs” and the four-year-old recently came home with lice.

It may seem like celebrity parents and kids don’t have to deal with the same challenges of everyday life that many do, but in Sienna Miller‘s case, that’s just not true. Case in point? Her 4-year-old daughter Marlowe came home from school recently with something most parents dread having to deal with.

“She got nits for the first time — like head lice,” the actress, 34, told PEOPLE Tuesday at an N.Y.C. screening of her new gangster drama Live By Night. Adds Miller, “She’s like a petri dish of germs. She just brings home things from school. It’s the joy of having a child in school. She said, ‘I’ve got ants in my head,’ ” recalls Miller. “And I was like, ‘Oh no!’ I knew exactly what it was.”

The single mom — she and Marlowe’s dad Tom Sturridge split in July 2015 — says that despite the slight panic in hearing her daughter brought lice home, she nipped it in the bud quickly.

“Yeah, we dealt with it. We had the hair fairies over,” she says.

Now that the lice issue is behind them, the mother-daughter duo is focusing on enjoying the holiday season together in a low-key, relaxing way.

“We’re gonna be in England. We’re gonna be snuggled up with old movies and fireplaces, and Mama’s gonna have some wine,” shares the actress. “Gonna stuff our faces with turkey and food, like we do every year, and try not to squabble as a family.”

[From People]

I guess I was a blessed child because I never had lice. I do remember that there were some kids who had lice, but when I was growing up, people always associated lice with being low-class, which I’m just now understanding is a ridiculous notion. Anyone can get lice! Now, I did pick up nearly everything else going around though, and that was my M.O. through college even. Like, as soon as a school year started, I would get sick with whatever was going around. I remember chicken pox going through my elementary school like the plague – kids were dropping like flies! So yes, I do think ALL kids are petri dishes of germs. Gross.

Photos courtesy of Fame/Flynet and WENN.