Well if you're current food plan has you NOT losing anything and you are looking to MAINTAIN, I would say keep on doing EXACTLY what you've been doing. Because in actuality, what you HAVE been doing IS maintaining, correct? So if you were to ADD in calories, chances are, you will gain weight. But only trial and error can tell you that.
The thing that bothers me a bit though, is that you mentioned you are hungry and you say that you're already at a high level. Perhaps you can shift around your calories, not necessarily the quality (but maybe), but the times and the sizes of your meals. Maybe stretch them out, eat smaller amounts more frequently. Of course keep in mind, I haven't a clue as to what your food plan looks like.
The strength training could possibly be a factor here, weight wise, time will tell.
And no, you're no failure here missy. Not by a long short. Look what you've accomplished. Just look!
The good thing about this is, is that you can change your mind further down the road. You can stay this way for a while and after a bit, if you want you can try your hand at weight loss again - or not - it's up to you. It's not written in stone and can be changed at any time.
In the meantime, revel in that new, wonderful you you've created.