Kiki the stray cat's sterilisation

Hello cat lovers! This beautiful black cat is Kiki, a stray that turned up on our doorstep several months ago. We can't officially take her in as our own cats are terrified of other cats, but we have built a little shelter for her and feed her every day as she is literally starving. She must have deemed us trustworthy, because over the months she has brought her babies to us! First, she came with 3 young cats, then she was pregnant again and is slowly bringing her next lot of kittens to us - 2 more so far. That brings us to a total of 6 strays that need feeding & loving, and of course, sterilising, so that we can finally put a stop to this never ending cycle. 
Please consider donating any amount you can to help us reach the goal of €150 to get Kiki sterilised so she doesn't have to go through any more pregnancies and worrying about how to keep her babies alive, whilst she herself is in such a bad way.
Once she's sterilised, we'll try and get the others done too, and find everybody a loving forever home!
Your help means the absolute world to us and all the stray cats who deserve a warm home with guaranteed food, without having to struggle just to stay alive every day and battle through the cold nights. Thank you so much!