Perhaps you could take the opportunity to stand up for yourself.
It's just that, after so many years, your self confidence should have returned now.
On the other hand, you will need to remember that mothers have a rather unique insight into us. If you mother is someone who would use that, and it's sadly not as uncommon as you might think, then it might be better to stay away. It could all be a huge set up. I know from experience this is perfectly possible.
At the end of the day you have to ask yourself some questions.
Why are you asking us? I don't mean that in any way unfriendly, but rather that the decision is quite personal. So you obviously have doubts.
Can you seriously manage to deal with another mental trashing by your mother?
Is it worth it. Is it worth the risk?
If this were me, if I'd known now before I went to that last visit, I'd never have gone. In my case, that was about 20 years ago now.