The stray I've been feeding gave birth today while I was at work. Please help with the cost of spaying, neutering, and adoption costs

The cats!

I've been feeding these strays for about a year. The momma cat has only been recently been friendly. I'm a single mom and have been trying to find a local place that is affordable. I found a place to fix mom and the two black and white cats for $45 each.

Since the kittens were born today, they won't need to be fixed for awhile. I have found a local nonprofit that will help foster them until the momma kitty can be returned and hopefully the kittens adopted out.

I'm not sure the best way to set up for donations, so pm me for my paypal unless there is a better way. Thank you so much!

My son said he was both sad and happy and will miss them while they are gone. I assured him Tux and Tails will be back and Momma kitty (if she isn't adoptable) will return to be our outside cat.

Edit: Update! Momma kitty gave birth one last time to an all black kitten once she was at hands helping paws! Momma kitty is nursing and caring for the kittens perfectly and appear healthy and happy :)