Professional Conduct: Opposing Attorney Non Responsive

My question relates to legal practice in the state of: California, Los Angeles County

My Attorney was in the middle of working on a settlement for ending a trust. The opposing party had agreed and their Attorney sent a contract that made no sense it was copied from a book with no proof reading. The contract spoke of not giving money to a doctor, there is no doctor involved. The contract needed correcting. After requesting corrections, the opposing Attorney stopped all comunications and no longer responded to my Attorney's contact. The opposing party had done this exact thing with a previous Attorney. That, Attorney spoke up and stated she was no longer the opposing party's Attorney. This new Attorney will not respond to my Attorney.

My Attorney states that, until the opposing party's Attorney states she is no longer the Attorney for the opposing party we cannot proceed.

Is there anyway to get the opposing party's Attorney to confirm or whatever the term is that she is no longer counsel for the opposing party?

The opposing party is absolutely fine there is no medical or any other reason for the lack of response other than she knows she can breach the deal we made and face no repercussions.

Thank you for any help or direction you can offer.

Professional Conduct: Opposing Attorney Non Responsive