You need to talk to her clinic, these schemes are run clinic by clinic and have different rules. You will need counselling, lots of tests etc., before they accept you. And of course any children will have the right to know you when they turn 18 (which is one of the things that stops people donating, apparently).
By the way, you could donate your eggs directly to your friend if you wanted to. If she shows up at the clinic with you as a known donor, and you all go through counselling together, there is no reason why not legally. I imagine clinics may have different rules, but the HFEA is fine with it. The woman who writes this blog did this with a friend last year, she now has twins
thedrownedgirl.wordpress.com/
It is a really lovely thing to do for whoever gets your eggs.