importing email from another TB profile

I have an old computer that was my mothers and has quite a bit of nostalgic content , notes, letters, etc. in here TB installation. I'd like to preserve them in my copy of TB, but not sure if it's possible. Different versions of TB, different folders and the email addresses and accounts in her copy are obviously different than mine. Any thoughts on how the experts in this forum would handle preserving the data in the old account? I was wondering if I could just drop the old profile into my profile folder and use the profile manager to open her account but don't want to risk corrupting my existing profile. Hope I've explained my problem! John