Crate training is awesome when done correctly. My dogs hang out in their crates when they don't have to because they are their personal spaces and they love them. They should never be used as punishment! Don't make the mistake of getting her a huge crate right now either. It needs to be small enough (for now) that she can't pee in one corner, then curl up comfortably in another corner. Once she's trained you can get her a bigger one, but for now you should get one she can stand up, turn around, and lie down comfortably in - but not any bigger. Don't put anything absorbant in their right now either (again, you can do that later for comfort). This teaches her to use her "holding it" muscles and then the very minute you let her out, she needs to go outside to pee. I even say "go potty" over and over again when I let them out and praise like crazy when they pee. This is helpful when you need them to pee almost on cue (traveling and you stop at a rest stop and don't have an hour to walk them, etc.).
IG's are pretty smart and she should learn pretty quickly. My mom LOVES her IG and full sized grey - the IG is definitely the smarter one. Plus, he's so friggin' cute!
It doesn't sound like a UTI, but that is definitely something to keep in mind. They tend to go from well trained to 6+ accidents a day when they have a UTI. Not gradual at all. Plus, they'll pee multiple times when outside for 10 minutes. My female Pyr started getting them a few years ago (right after I got married) and I figured out that it was because my hubby (previously not a dog person) wasn't letting her out enough when I wasn't home. She would hold it like 12 hours or more and then end up with a UTI. I had to train the hubby, not the dog.