It's a charity, Alveus will always rely on donations. Thats the whole point. They are running multiple events per year for fundraising. Also the Alveus Channel is getting pretty sizeable now, so thats a stable income through subs and adrev. They also do bounties on there sometimes.
Alveus is growing much quicker than she anticipated. Today she announced that two wolves are coming. It's definitely not gonna shut down any time soon. Her aim was always that Alveus can function without the "Maya" brand and it seems it's on a good way. Financial reports are published btw, so you can inform yourself.
But the stream today is showing that she can still pull much bigger numbers if she interacts with the streamer scene and she will always try to put an educational spin on it. With the basketball stream on monday, I don't know. I think she just likes basketball and competing with men.