a friend of a friend of a friend... etc...
uses prepaid legal. look into it. its a monthly (or yearly fee) for all the help you'd need. and if you need more than the amount of hours you can pay for the extra. it's still cheaper than using a regular lawyer.
You can call around to various divorce attorneys for your friend... and make appointments with two or three, all of whom should offer a free initial consultation.
When supplying a name, give a false name to the receptionist/appointment-maker... until such time as your friend hires an attorney, there is no "privilege" involved and you don't want to compromise your friend's marriage anymore than it is now.
If asked for an address, tell them you'd rather not provide it until your appointment... many times attorneys/other professionals will attempt to reverse check your address w/ the name given, and you don't want this dichotomy to cause the attorney to cancel the consultation.
As a last resort, you or a close friend or family member can be the point person in name, address and telephone number until your friend hires an attorney, at which time she can provide her real info.
Hope this helps,