Now that they have their hooks into her, they will be calling back, so you will need to take precautions to prevent her from becoming a repeat victim.
If you feel you SSN has been compromised, in addition to putting a fraud alert at the 3 credit bureaus, you may want to notify the IRS. Here is the link, fill out the proper form (probably 14039). Also file a report at the FTC Identity Theft web site as well as learn what else you need to do:
http://www.irs.gov/Individuals/How-Do-You-Rep ... aud-Activity%3F
https://www.ftc.gov/faq/consumer-protection/report-identity-theft
They confirm your name and address. Then claim to be from Medicare. Next they wanted my Ssn and my secondary ins co. I told them I did not care to say. At that point they immediately hung up. I immediately blocked the number. You should do the same.
Called last night round 6 and then this morning at 10. Caller i.d. says "invalid number." I never answer any call from a number I do not recognize. If this is an invalid number, you can bet your bottom dollar it's a scammer.