If your soon to be ex is like mine was - and from your brief description of her actions, she seems like she is...she is just doing this to yank your chain.
Your attorney works for you. Any respectable attorney would not discuss any of his tactics with the opposing counsel that might risk your position. Now, they may share things to gain a rapport with the opposing counsel or to even make the opposing counsel worry about their own client's dishonesty.
So long as your attorney has been reputable and honest with you, thus far...I would suggest you let this go as your STBX mouthing off to make you question your representation.
Your attorney works for you. Any respectable attorney would not discuss any of his tactics with the opposing counsel that might risk your position. Now, they may share things to gain a rapport with the opposing counsel or to even make the opposing counsel worry about their own client's dishonesty.
So long as your attorney has been reputable and honest with you, thus far...I would suggest you let this go as your STBX mouthing off to make you question your representation.