[FlorayG]

What is her diet like? Too many processed foods, too much omega 6 and not enough omega 3 oils in her diet will cause this as well as hormones.
Omega 3 causes the oils in your skin to be more liquid so they don't clog up so easily but it's the ratio of 3 to 6 that matters not the total amount - this is why many people think fish oils don't work, because they are still eating masses of omega 6 in processed oils ( including those used to make cakes etc)