I remember when my daughter was two, I also wanted to have therapy for her. Couldn't find it for her, so I started it for me and got some help there. I also joined a Co-op preschool that had parent education once a month. It was really wonderful to have that support and education. I recommend it highly. Since you are on a military base, do they have a co-op preschool?
In the meantime, I would like to give these little bits of advice: Your daughter sounds like she is very sensitive and intelligent. If you could look at her emotionality as positive rather than negative--for example sensitive and intelligent--it might help your relationship with her.
I had a daughter that was highly sensitive, intelligent, emotional, and she had a lot of temper tantrums to go with it. It helped (!) me to view her emotionality as sensitivity rather than willfulness. She still had plenty of tantrums, but I handled them differently.
Try to figure out what things stress her out. Make sure she eats well--limit sugars, etc. Make sure she is sleeping enough. Set up a routine and stick up to it. Watch out for things that scare her. (my daughter was scared of heights and monkeys) Watch out for noisy situations, large rooms full of people talking. Some kids can't handle that. Things like that.
And things will get better. You are in the twos. The trees will be hard too, but you will love the fours.