Don't get discouraged by that. Sometimes we post and don't get many replies. You just need to post and maybe join a particular group. I have been missing in action for a few years until recently so I have just started to post and haven't really joined any groups. Not sure where I fit in just now.
At 5'3" you are definitely a nice weight. That is the lowest weight that I have ever been (10 years ago, LOL). But I do understand your desire to lose 15 more. I felt lumpy even at that low of a weight
Cheer up! We are all here to support you in your goal. Make some posts and open up a bit about yourself. You can and will succeed......and welcome!!!!