what should I do

I'm a foundation law student, currently caring for 4 cats- one stray who I picked up last year, one paralyzed stray rescued in may, and two paralyzed cat's kittens.

On May, my toxic friend that I had known for five years suggested to rescue the cat who got into an accident around our old school (some junior posted it) the cat were injured for days.

But no one helped it, so I went to rescue it together with the friend.. I never thought of contacting some prof rescuers that time.

Well I can't wind the clock back so

After that, we found out she's paralyzed. We had to discuss who will foster her everything. And my friend, she doesn't want to take responsibility.

I did everything such as taking care, planning for the treatment, fundraising for the med bills on my own. All she did was taking the treatment pictures and bills to post up on her social media. I got tired of always texting the cats situation and caring it all my own. I have to press the cats bladder everyday to let her peepoo. I even got fever cough and flu during that time( I'm terrible at handling stress). And my friend did not care about me.

I quarreled with her, and got scoldings back from her boyfriend. And they boycott me from the friend group. But the other friends did not care about me too, they're just, well, as long as they can go out and play, not staying by the one who can't go out and have fun.

I care about them, and I like fairness. So I ask one of them, that I treasured: "She treated me like this, and y'all are okay with it? Is it fair? She replied: "She treats you bad, not us. Your not wrong, but I can't do anything."

Then I cried and cried and not eaten for a few days. Because during highschool, we all stick together for everyday. Although the toxic friend always treats me bad, but it's my fault for not fighting back for myself. I should have leave them.

Now I'm studying while settling this. The paralyzed cat is sick again, and needed a lot of money.

I'm preparing for my exams, doing my assignments, making fundraising post for the cat bills, coping with family problems and trying to walk out of that friend group.

What shoud I be feeling? I'm angry, sad, tired, pain and depressed.