Credit: Jeffrey Mayer/WireImage for ASCAP

Another bitter chapter in the Melissa Etheridge-Tammy Michaels split.

In a declaration released Thursday, Etheridge, 49, accuses Michaels, 35, of using their 3-year-old twins as "pawns."

She claims that on July 6 -- during a break from her summer tour -- Michaels told her their kids were going to meet her at her Boston hotel.

A short time later, she "received a text message ... stating, 'My plans changed, sorry,'" the singer recounts in the court papers, obtained by E! News.

Etheridge says she was then served with court papers from her ex.

Etheridge says it was "a ploy to have me served, and mistakenly believing that by serving me, I would have to dismiss my Petition ... [she] used our children as pawns."

Etheridge's claim is an attempt to fight back at Michaels, who is asking for in excess of $12,000 a month to take care of the kids and find work. See more volcanic relationships.

Michaels, a former actress who is now a full-time homemaker, claims she has no income.

Michaels says she doesn't see why Etheridge can't support her, considering that the rocker rakes in between $600,000 and $750,000 a month.

Etheridge's attorney says the singer currently gives Michaels $2,000 a month and pays all of her household bills. Etheridge announced she had split from Michaels earlier this year.