Hello, I am sorry to hear you are worried about Snickers. I am a veterinarian and will do my best to help.
If she has UTI,urinary tract infection, it is a good idea to start antibiotics as soon as possible. If a bladder infection moves up and becomes a kidney infection, that can become serious.
There are supplements that will help: D mannose, cranberry extract, but these work in conjunction with antibiotics. I try to recommend home remedies and supplements whenever I can, but in this case, if this were my own dog, I would do a urinalysis, and start antibiotics as soon as possible.
Another thing that can cause blood in the urine is bladder stones, so if this does not get better with antibiotics, I would take an xray to look for stones.
Let me know what else I can answer or help with. Rebecca