This woman was trying to undermine my English abilities?

Basically, I had this woman in my friends list whom we couldn't remember talking to each other after such a long time. She tried to undermine and say my English isn't okay and all and as you can perfectly can see, I'm typing decent English. Moreoever, she started to laugh and said I needed more help in English when I told her I teach English to some foreign students. What do you think is wrong here? Her or me? and why?