I asked her and she said people that knew her in real life found out about her content and she didn't know how to handle that, but despite that she always liked creating content and always considered returning, until she finally took the courage to.
As for if she is using an agency: she promptly switched to Portuguese after I told her I spoke it. The time it took for her to write the messages seemed natural and the way she wrote was specifically Portuguese from Portugal, not from Brazil, which would not be the case if she was using translate, I think.
Not sure if this is enough to say it is not an agency, but if she is using one, it's a pretty convincing one.