Hi, Shae!
Wow congratulations on your loss so far! That is something to be extremely proud of! Don't lose sight of all the hard work you've done. It's paying off slowly as the lbs come off and as you start feeling healthier and better about yourself.
It's great that you're still exercising and eating well even though you may not be as strict as before. This may be a good thing because although you refer to it as "diet," it is much more than that. It's a lifestyle, so it is key to adapt it so that you can live this way for the rest of your life.
I must say that motivation is fleeting. It comes and goes at random times and I advise against waiting for it to come again to get back in the game. Staying committed and making it a habit is the way to go.
You may want to try using goals to get back in the swing of things. They can weight related or not. For example, for every 5 lbs you lose, you get a massage/mani/pedi/new boots/whatever your heart desires. Or nonweight related, such as, for every 400 minutes of exercise, you get a reward of your choice.
To spicen things up, you can try varying your work outs (ie. try yoga, kickboxing, tae bo) and your meals (CookingLight.com has some great recipes).
I suggest checking out the Featherweights forum here at 3FC. It's great support for those who are very close to goal but are losing motivation.
Hope this helps! Good luck!