Welcome to YT - You and she are going to love it here! So much info....
Regarding her teeth. IF she has been kept in a kennel for her 4 years, she mostly likely NEVER had her teeth brushed or NEVER had any chew toys to help with tarter and plaque. You can start now with brushing her teeth or even just getting the 'wipe' clothes for teeth and then I would suggest a Vet appointment and they will probably like to do a teeth cleaning and possibly remove any 'bad' teeth. Has she been spayed yet??? IF NOT, then the Vet can do both at the same time!
Good luck and keep us posted
