I have tried a lot of Ethiopian food, in Tucson, in Tempe, in Dallas, in the Bay Area and Tina's is by far the best of all! What I love the most about her food is that it's fresh, healthy and cooked with a lot of love. Yes, she runs a business but she is pretty particular about the quality (taste, freshness, health, hygiene) of her food. She makes you feel right at home with her smile, great service, great food and even more homely ambiance. Sometimes she runs out of a few popular vegetarian dishes, so if you know before hand you are going to be there, call her and she'll make sure to save or even prepare your favorite dish.
The food, if I haven't stressed enough already, is delicious and you can eat it all guilt-free as it isn't too oily like some other Ethiopian food is. She remembers her guests and their favorite dishes. So, if you go there after a long break, be sure to come up with a good enough excuse for not showing up earlier!