feed reccommendations?

New goat owner here, any advice is welcome. I have a new doe (Dani) that I moved to our little farm on the 19th. She's a it skinny, and her previous owners complained of not being able to keep weight on her - but ever since we got her, she turns her nose up at all the food we've offered her...

We have a 4 year old QH mare who is looking pretty bony... you can't see her ribcage at all but her neck is kinda narrow and thin and what i'm mainly concerned about is that her hip bone and spine are very visible. her hindquarters and back area are overall looking pretty skinny. She is...