Once again this is more completely false info. She will not have to transfer in anything that she brings with her when she moves. The compliant bullshit you keep referencing applies ONLY to dealers NOT to individuals. You can buy or move in with ANY handgun you want in MA, but the off list ones can ONLY be sold/bought through private FTF sale. An FFL/deal can't legally transfer them to a MA resident. Please educate yourself before giving advice like this!
And what law/regulation did you read to uphold this? If I am wrong, I will admit it. Did I not just say I had been through this?
Quote some state laws and statutes before telling the rest of us what is the law.