The doli incapax rule is this.

A child under the age of 10 (or is it 10 or under? I think it's under 10) is conclusively presumed not to be able to form criminal intent.

A child under the age of 14 (or is it 14 or under?) is presumed not to ahve formed criminal intent unless it is shown that he knew what he was doing is wrong.

As to gender, according to the Interpretation Act, references to one gender include references to all genders unless otherwise required (that is not the exact workding but I'm not looking it up now).