From reading the article, it doesn't appear that this was a "probation meeting". The officer was at the woman's house to facilitate entry by CPS. It cannot be illegal or "against the rules" to tape conversations occurring in your own home, with or without consent. No one who enters your home has any expectation of privacy from you.
It is interesting to see how the "rules" are interpreted, though. I had a friend who was having some problems with a CPS worker. She would talk to the worker on the phone, and when she read the report to the court, the conversations were never reported correctly, always slanted against her. So she taped some of the conversations to prove her point (I listened to the tape and read the case worker's report to the court - the case worker flat-out lied.) When she presented the evidence to the caseworker's supervisor, instead of disciplining the caseworker for filing a false report, they wanted to prosecute my friend for wiretapping.
As a further irony, CPS called me to interview me about the incident. When they got to court, they had a tape of the interview - made without my knowledge or consent. So they were going to try to convict my friend for taping them without consent - by using a tape they made without my consent! (The wiretapping charge was eventually dropped.)
I had to reread the press release, but this is not the first time she's been in jail in this matter.
In essence, the conditions of probation are whatever the PO says they are, whether they're on the fly or not. Don't comply, you go to jail.
As I said, that's why some of the more experienced jailbirds take jailtime rather than probation. PO's have enormous power over the probationer's life.