Told off by my neighbor

I went over to my visit my neighbor who lives across the street and when she opened the door, I was met with a “you’re too thin! “ drubbing. No hi, hello , just instantly not yelled at but close- you’re wayyyy too thin.

I’m also usually the never complain, never explain type, though I asked, do I look bad? She said no , you look great. So it’s a bit confusing. For context, I’m 61f and am 5’7” and the last time I weighed myself ( on a doctors scale) 109 lbs.

I feel great, have zero health issues, I don’t drink or smoke etc.

I’m a pretty stoic person, and very little gets to me but I’d like to hear how you handle this if it’s happened to you.

Thanks in advance.