Hi Boris,
I'm highly triple positive but "only" five years out but had a similar treatment to your wife.
However, I have a friend who was diagnosed twenty four years ago with an aggressive large tumour and twenty two positive nodes and is still doing great and has never had a recurrance.
She does'nt know if she was her2+ as testing was'nt done back then but suspects she was, her daughter was two and is now twenty six or thereabouts and she wondered if she'd live to see her grow up
No one knows how each of us will respond, but yes, there are many ladies here on this site that had many positive nodes and still doing well years later, so stay positive and I hope your wife will do well too