Keep trying. I read some studies that said that 7 - 9 months is a key window for introducing lots of tastes and textures so as not to get a picky eater later in life. Even if she will only take one spoonful, that is something.
I would also suggest avoiding commercial baby food if you aren't already... if you have tasted it... well, it is nasty. It tastes like overcooked veggies. Try real food... bananas squished with a fork, avocado, tofu, yoghurt, peas smushed and strained, oatmeal, squash, sweet potatoes... Try something new at least ten times before accepting "don't like" as a verdict. Even if she is only mouthing and tasting, that is something.
As for the amount she eats, if you are feeding her before she gets a bottle, you're probably doing what you can to make sure she is hungry... she might just be taking a break from growing at the moment, who knows. If she's still on formula, that will take care of a lot of her calorie needs, though you might want to watch her iron levels. Let her crawl/toddle around a lot, too.