@Nathan Alden, Sr. As I stated, it is not required. They only need 1 signature, both is fine but only 1 is needed. Honestly it is up to you but as you say she may run into an issue with a notary there as when it comes to government forms they can be a bit restrictive. Not to mention the time and cost of a courier for everything from the Philippines. My wife never touched the ROM form or anything else. I had copies of everything needed for the 130 filing so I filled out the ROM and sent off the packet.
Also you will have plenty of time for everything. I was in your overwhelmed place a short bit ago. Not everything has to be done at once, Give yourself a chance to breathe and contemplate everything and it won't seem so overwhelming.