Not really a sustainable food source, but you can buy these puree squeeze treats Like this (I’ve only bought them at a cat boutique so I don’t know if like Petco sells them). Might be a way to get some calories in her or possibly help build an appetite.
Though if she’s really young it might be best to stick to kitten formula.
I HIGHLY recommend squeeze ups. I have a cat who’s extremely picky and literally eats nothing but his dry food, but he’ll tear those treats up. I use them for any and all meds my cats need and never have a problem. There are other brands that make a similar treat, but in my house, these are the universal favorites.
Good luck. I know how stressful it can be to get meds in them.
The first question is your cat an orange boy? It sounds like some very typical orange cat behavior. I also have a drama queen boy who will literally yell NO when he's upset. He's the worst to give medicine to. We did finally find a trick that really seems to work and it's these squeeze tubes of cat treats. You can mix whatever medicine you're giving your cat with the tube and they'll eat it right up. It even worked with bannana-flavored antibiotics
Since everyone is asking for the sauce, it's similar to this: https://www.amazon.com/Delectables-Squeeze-Interactive-Wet-Treats/dp/B01KVUACDS?th=1
I found some on amazon here
Edit: found some grain free ones too https://www.amazon.com/dp/B077L4964Z/ref=cm_sw_r_cp_api_i_twafCbHQH69MW
My cats love these. On their own. https://www.amazon.com/Delectables-Squeeze-Interactive-Wet-Treats/dp/B01KVUACDS
I'm so sorry. All the cats I know are obsessed with these squeeze treats, and we just ordered some more before my gets some teeth extracted
https://www.amazon.com/Delectables-Squeeze-Interactive-Wet-Treats/dp/B01KVUACDS?th=1
I got these and when I flick the bottom of the tube, my cats come running. https://www.amazon.com/gp/product/B01KVUACDS/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1