Luann de Lesseps is back in the Big Apple after checking herself into an alcohol treatment facility in late December following her headline-making arrest

By Dave Quinn and Dan Wakeford
January 23, 2018 11:20 AM

Luann de Lesseps is back in the Big Apple after checking herself into an alcohol treatment facility in late December following her headline-making arrest.

“It’s good to be home. I’m doing great. Spending time with friends and family. Thanking everyone for your continued good wishes and support,” she tweeted Tuesday.

The 52-year-old reunited with Real Housewives of New York City cast members Ramona Singer, Bethenny Frankel, Dorinda Medley, Sonja Morgan, Carole Radziwill, and Tinsley Mortimer in a now-deleted photo that Singer shared to Instagram on Tuesday.

“The gang’s all here!” Singer, 61, had written, adding the hashtag, “#reunited.”

A friend who has seen her since leaving treatment tells PEOPLE, “She is doing great and in good spirits. She’s taking care of herself and is in a very positive state of mind.”

Carole Radiwill, Ramona Singer, Sonja Morgan, Luann de Lesseps, Bethenny Frankel, Dorinda Medley and Tinsley Mortimer
| Credit: Ramona Singer/Instagram

De Lesseps was arrested in the early morning hours of Dec. 24 and released on her own recognizance that same day after allegedly attacking a police officer in Palm Beach. Her next court appearance is scheduled for Thursday.

She was charged with and pleaded not guilty to disorderly intoxication, battery on an officer/firefighter/EMT, resisting arrest with violence and threatening a public servant, according to the Palm Beach County Sheriff’s Office.

The reality star had been discovered trespassing in a hotel room with an unidentified man, according to a police report. The pair had allegedly entered the wrong room at the Colony Hotel in Palm Beach and refused to leave. Police say de Lesseps slammed a door and kicked at least one officer. She also allegedly told the police, “I’m going to kill you all.”

Luann de Lesseps
| Credit: AP/REX/Shutterstock

After her arrest, de Lesseps — who had gotten married to ex-husband Tom D’Agostino in Palm Beach on last New Year’s Eve before their divorce seven months later — released a statement, saying, “This was my first time in Palm Beach since my wedding, and being here brought up long-buried emotions. I want to offer my sincere apologies to anyone I might have offended with my behavior. I am committed to a transformative and hopeful 2018.”

That transformation began days later with her trip to rehab.

“After the events … in Palm Beach, I am truly embarrassed,” de Lesseps said in a statement to PEOPLE as she checked herself into treatment. “I have decided to seek professional guidance and will be voluntarily checking into an alcohol treatment center. I intend to turn this unfortunate incident into a positive life changing event. Once again, I sincerely apologize for my actions. I have the greatest respect for police officers and the job they do. My actions alleged in the police report do not reflect my core values and my law abiding character.”

“I am so grateful for the love and support that I am receiving from my family, friends and loyal supporters,” she continued.

RELATED VIDEO: RHONY’s Tinsley Mortimer on Moving on After Her Humiliating Arrest and Violent Relationship: ‘I Still Believe in Love’

Among those supporters were de Lesseps’ RHONY costars.

“She’s taking care of herself,” Frankel told E! News at the launch of her Skinnygirl Jeans line earlier this month, adding that the two had “been texting.”

“She said she’s in a good place, so you know, like I said, we all have our flaws,” continued Frankel, 47. “Luann’s no different. We all have high points, low points, times we feel confident, times we feel less confident and so … but I’m sorry she’s not here.”

The women all also stood in solidarity with de Lesseps on Friday, sharing mugshots of their own taken at a prison-style bootcamp class called ConBody.

The Real Housewives of New York City is expected to return to Bravo for its 10th season this spring. De Lesseps’ arrest and trip to rehab will be covered on the show, a source previously told PEOPLE.