Cyn, I'm so sorry that Zane hasn't shown much improvement and understand the difficult decisions you're having to look at. I am wondering if there is an organization/non-profit that helps people with vet bills in your area. We have one here that sometimes helps people out with vet bills, although it is typically dogs, cats and an occassional rabbit, but it might be worth a shot. Also, never be afraid to ask for something; they may say no, but they may also say yes or be willing to work something out. And finally, I know you are a generous soul and have given much to others. I ask you to remember the feeling you get when others allow you to help them - please don't deny other people that feeling from helping you.
Love and prayers to you all,
Liz