Hello Dustin and welcome to the family, so glad you could join us and we look forward to hearing more about you and your grey.
A bird usually doesn't have to watch another bird to learn how to preen itself, that is something that should come naturally. As far as bathing, we have some threads that go into detail about giving baths and showering, give them a read thru for ideas and suggestions.
I'm glad you could take in this grey and give her a forever home, she needs the love and attention she deserves and I am sure you will provide that for her.
For lots of useful information please read thru the many threads and do not hesitate to ask any and all questions you may have and we will help you in any way we can.
If you have some pictures of your grey you would like to share with us we would love to see them.