She split up with Louisa about a year previous to her going into rehab - though this being Jack, it may have taken a year to sink in . And I don't believe she spent her 'wedding savings' on the rehab. I think Louisa may have paid for it. If you were to believe Jack, during the ongoing poverty / trammies and whiskey / sideboards paid with Patreon money/ etc, she's still saying she had savings with Louisa? Nah. She got Louisa to dip into her savings for the weeks at an aparthotel in central London plus dayhab fees. Though Louisa was probably just happy Jack wasn't staying at hers, and might have thought it worth it to cover her bills for this reason alone.
You know, the alternative is that whilst she was begging for money and sympathy because she was all on her ownsome and so very, very poor, she was still in a relationship with a very wealthy partner.
You know, like benefit fraud.