Do you have mineral oil? That is another good option which also has laxative effects. If not, use what you have. Coconut oil is easiest as you can freeze it til it's hard and give it in bits easily. Try to get a Tablespoons worth in. And then water, water, water and more water. I would...
First thing to do is give fluids, coconut oil, and do crop massage, see if you can break up the mass and get it to pass. When massaging, do not massage upward, you don't want to force stuff back up and risk her aspirating any. You will need to repeat this for awhile to see if you can get it to...
It does look like the crop. Some birds stuff themselves when they eat. Best way to know if there is an issue or not is to check it first thing in the morning before the bird has had access to food or water, it should be empty then.