So easy, you just ask her bring renew contract forms from Immigration dept.
First, you need to wirte down a few forms and other forms must her write down. Second,
after finish she must go to Philippines Consulate approve. The Consulate fee is about $600 something. After approved, you need bring to this form pass to Immigration dept. Final, you need give Visa fee ($135) and Levy ($2400). Normally be accepted within four weeks prior to the existing contract.