The background that's public knowledge is Vshojo's merch was in a barely functional place, Matara worked with Bricky (since he's been in the merch game for a while) and his distribution group. That group hired on some of Matara's family. Matara's business was nearly all separate from Vshojo and it was an issue in their renegotiations on her contract. That's why she said she was "happy with her decisions". This is straight up just a case of diverged business interests and the parties are parting ways.