The crate really needs to be just big enough for her to stand up and turn around, anything bigger and she will choose a corner and potty there and you have defeated the purpose of the crate. As Sam I Am said the whole point is that she is never allowed to toilet inside again hence when you can't be giving her 100% concentration put her in the crate. You must also give her every opportunity to toilet outside, if you leave her in the crate and she really needs to go she can only hold it for so long so it is your responsibility to ensure she doesn't have to go potty in the crate. You have to be prepared to get up in the middle of the night if she asks to go out too! I was getting up 3 times a night and trapsing down stairs to the outside but that was when T was only 2 - 3 months old after that he was only once a night.
I would be going back to taking her outside every hour, after sleep and after she eats. Get into a routine so she knows what to expect, and knows she will have an opportunity to toilet outside regularly.
I can't stress this enough YOU have to make sure she NEVER again toilets inside. Don't give her any opportunity to get it wrong and she will very quickly learn that outside is the way to go. If she has an accident inside it is YOUR fault beacuse you haven't been vigilant enough and given her the opportunity to go outside.
T is now kennelled at night with the older dog and he will not toilet even in the kennel run which is concrete. If his paws are not on dirt or grass he will not toilet, he has been like this from 4 months of age. We may have had 3 or 4 accidents in the house, only ever wees and only because I was learning his signals, once I got the hang of it we didn't have any more accidents