Ditto on the congrats!
I've gotten the same comments, and I think it's a perception problem. They're not used to seeing you at this weight, and so to them you are too skinny.
I want to loose 5-10 more pounds. I think they're probably just vanity pounds, but I want to. It's still in my healthy range, and it's MY body.
When people tell me I've lost enough, or I'm too skinny, I just laugh it off or agree with them or whatever it takes to make them happy, and then I eat what I want or don't want. They don't have to know how much I weigh, and they don't have to know what I want to weigh. You do what you need to do, and brush off others' comments.
That's my plan anyway...
Congrats again and great job!