Saving Harley Girl

This is my Harley Girl. I rescued her from the Humane Society about 6 years ago. When I walked in there that day she was in the first kennel on the left and when she saw me she started jumping up and down with joy. I fell in love with her instantly and knew she was the dog for me. We have been inseparable every since. She has brought so much love and joy into my life. I thought I rescued her but we actually rescued each other. Having depression she has made my life so much brighter and happier than I ever imagined it could be. I can’t imagine my life without her but two weeks ago she started getting sick. It all started by her vomiting a couple times on a Thursday but she continued to vomit each day but by Sunday she would be walking and just fall down. About an hour later she was laying on my lap sleeping when all of a sudden she started shaking really bad. I realized that she had had a seizure. It lasted for about a minute. I took her to the pet ER and they ran some tests but couldn’t find anything wrong physically and said it was probably neurological. I followed up with her vet the next day and she said that with her symptoms it is most likely a brain tumor. She is on medication to control the seizures and will be on it for life but that won’t save her life. She needs to have an MRI done to determine if she can have a surgery to remove the tumor or else it is only a matter of time before I lose my Harley Girl. I am begging for anyone that can help us get this surgery so my Harley Girl can live. I promised her I would do everything I can to save her life. Please help us!