my dogs's name is Ava; congrats on the new puppy and sorry to hear that she's not feeling well.
when i got mine she was sick too and wasnt eating; she was positive for giardia and was fine after taking the meds.
however she's 2 years old now and still have digestive problems; she was admitted to the hospital twice and was diagnosed with gastritis; all this because she wasnt eating and i didnt have experience on what to do.
however after i joined YT i learned much.
to get her to eat you can start for 2 weeks with boiled chicken and rice; if not then you can give gerber baby food; beef, chicken apple dinner and banana; mix a bit of each and add probiotic and digestive enzymes.
then eventually you have to switch to dog food; i have tried everything you can imagine and she wouldnt eat none. until someone recommended the honest kitchen; which is human grade dehydrated raw food; which you can add warm water to. my dog loves it and she eats 4 small meals daily; adn i add digestive enzymes and probiotic.
good luck