"Halle has serious concerns for her daughter's well-being while in the care of her father for any extended period of time and is prepared to take all necessary steps to protect her," the actress' rep told People.
"She has attempted to resolve these custody issues amicably with her daughter's father, Gabriel Aubry, directly, but given his lack of cooperation, Halle has no choice but to seek swift judicial intervention."
Aubry filed papers seeking shared custody in December after the couple's informal arrangement started falling apart, reportedly over Halle's jealousy of Aubry's dates with Kim Kardashian. They split last April.
"Halle has always made the needs and safety of her daughter her first priority and, both while Halle and Gabriel were a couple and since their break-up, Halle has only acted in her daughter's best interest," said her rep.
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