Toxic Friend or am I over sensitive?

I avoid scratchy people when i can possibly do so.

She sounds like a deeply insecure person. Perhaps she actually envies you? If she is causing you angst I would reconsider the holiday idea but I would stay in touch because maybe she is just unloading and might calm down in time. You can always book something when and if you are more comfortable.

I know the type. These not so subtle put downs/plain insults don't do anything for your self esteem or peace of mind, just walk away. Don't question yourself, but look how bitter and unkind she is.

How dare she run down your life and your life style. She sounds despicable and is no friend.

Why you would even think about seeing her again I don't know. For the sake of your dignity and self respect, see her for who she is and shut her out of your life.

You hadn’t seen each other for 30 years and you go away with her. It wasn’t successful and so you book another holiday with her!? We have friends that we love dearly and have lots of outings with, but going on holiday with them will never happen

Personally I wouldn’t go next year, but it’s your choice.
One holiday may have been enough for her to get it all off her chest, but if you remember her from 30 years ago as a a queen of subtle putdowns and you think she hasn’t changed, I’d have to weigh up how much I wanted a holiday partner against how she would affect my personal well being. She obviously upset you this year.

Wow! Some friend. She is totally insensitive, boring and obnoxious. Ditch her. She is probably basically unhappy and jealous of the lifestyle you lead. Avoid going away with her at all costs. Maybe just liaise via email or text.