Alliesmom, First, I want to tell you that you are beautiful in your photo. You look like you are at a healthy weight - I don't think your face looks too thin and your arm and upper body look very fit. It does sound like your former coworker was jealous of your success.
You are the only one who knows when enough is enough. Or maybe, like me, it's difficult to know. It's frustrating to work so hard to lose weight, lose so much weight, but find your body doesn't want to go below a certain level and you're not at the goal you had set for yourself. That's where I'm at right now too. Why not maintain for a while now? Mentally, it is a relief to not have to focus on weight
loss all of the time. You can maintain for a while then if you decide you want to continue to lose weight, you can start those efforts again. You know that you may have to shake things up some to continue to lose weight. It sounds like what you are doing now isn't going to do it. That's where I'm at now. I'm not sure that I want to drop my calories much lower or that I want to eat fewer carbs or that I want to add/change my exercise. So until I'm ready to change any of that, I'm maintaining for a while.
You've had such success with weight loss, and even if you are not at your goal weight, you've made such fantastic strides. Don't lose sight of that.