muellerboys031811_01_X17230WM.jpgBrooke Mueller is remaining committed to her rehabilitation program, however she is sticking to her guns when it comes to drug tests.

According to various online reports, Charlie Sheen's ex is refusing to be tested unless Sheen is tested, as well.

Reports also claim Mueller believes Sheen has been violating their agreement from day one by discussing their marriage and custody issues in public. Contrary to reports Mueller has been living a reckless lifestyle, sources close to the mother of two say she's been caring for the boys and providing a stable environment for them.

Sheen is currently paying Mueller $55,000 a month in child support.

Find out what's next in regards to the custody of the twin boys ... after the jump.