you can both soak and massage the area. If it doesn't come out right away then just keep track of it and how long until she defecates. They are able to get it out on their own most of the time, keep in mind it's normal for them to not poo after a few months so do not let it worry you too much. I've only had to deal with a clogged urate once. Make sure she is hydrated!
edit: I ended up resorting to a "rat lax." It's not exactly the healthiest option but it's not harmful. I injected a f/t rat with a small amount of olive oil (about .06 mL) through a syringe down its mouth. This method was effective, because a couple weeks later she pooped after a long 8 months. The oil helps to lubricate the stool.