Oksana Grigorieva has hired Lisa Bloom to represent her in her family law war with Mel Gibson ... Bloom told TMZ.
Bloom told TMZ, "I believe Oksana is the victim of domestic violence and I'm very proud to assist her as she seeks justice." Bloom would not address her strategy on custody and child support issues.
TMZ first reported ... Sorrell Trope resigned from the case because he was frustrated with what he believes are publicity-driven lawyers on the team. But Bloom insists Oksana fired Trope, adding, "I have seen the email [from Oksana] firing them."
Sources tell TMZ ... Sorrell Trope and his firm have wanted to quit the case for nearly 2 weeks.