New (failed) experiment: tomato, blight and common ivy

I have a love-hate relationship with my tomato plants. They are annoying with all the maintenance they need, and then everything dies to potato blight. But they also smell great and look great and everyone loves the tomatoes, of course!
There was one plant growing beautifully, which produced fruits and then got the blight. I decided to cut just the stem with fruits and keep it in water.
I cut all the leafs that had the blight and let it dry in the sun, then I put it in water and I researched what plants have antifungal effect. Common ivy does, according to the internets.

So I shredded two common ivy leaves and I attached the tomato to a common ivy twig, hoping it will somehow eradicate the blight so the tomatoes can grow some more and turn red. Who knows?
My plan is to change the water daily and put fresh leaves in.

I'm not planning to plant the ivy twig if it produces roots, because I have too many.

I had the idea when I found an old aspirin pill, and I remembered that it helps "rejuvenate" rose bouquets if they are given aspirin in the water. But aspirin doesn't have any antifungal properties so I looked up what does. The ivy is also poisonous of course, and I wonder if it can affect the tomato fruits, but for now I'm just curious if they can turn red like this. Then I will be wondering if they're actually edible ;)

Fail :(
First I saw a small spot of blight on the stem, but it wasn't growing so I thought that common ivy works somehow. But today I saw blight on the smallest fruit and on these tiny leaves of other fruits. So, more green tomatoes tossed to compost.

Flora I'm not an expert. I'm pretty sure next time if you remove the tomatoes and place them in a sunny window they will get ripe.
I don't know if the Ivey would make the tomatoes poisonous, but I wouldn't trust them.
Next year I suggest planting a tomato that is resistant to blight.  They may still get still get blight, but I understand you can cut the affected part off and it will recover.  I have not experienced this myself, but that's what I heard ( so it may not be true) it seems like it would be worth a try.  You may also try planting your tomatoes in a different spot, or in a large pot, or bucket with organic soil and compost.  
If you want to root a tomato cutting. In water I would remove all the tomatoes, and all but a couple of leaves.  Or remove all the tomatoes and all but a couple of leaves. Dip the end in a rooting hormone, or not, and put it in soil.  Tomatoes are actually pretty easy to root. I found this out one year one of my tomatoes was taking to much space. I cut a bunch of branches off and tossed them on the side of the garden. I'll be darned if they didn't start growing and produced tomatoes.  
Most importantly don't give up. We all have those experiences where this didn't grow, or grew but didn't produce. This bug, or that disease, the weather just doesn't cooperate.  But we keep trying, and it makes it that much sweeter when all the stars align and everything works out.
Good luck

Thanks! I have two large indoor pots which I'm waiting to restart once the tomatoes ripen. These are the only tomatoes that didn't get affected. I guess they just hate humidity and rain on their leaves.

Thanks for sharing your experiment - negative results are also results!
I did a bit of online research out of interest, and I'm not sure that much is known about ivy and blight. It looks like there are some studies on leaf extract effect on various types of fungus but not necessarily blight. It also seems that ivy can get fungal diseases itself, so that isn't particularly helpful. I suspect a spray of an alcohol solution may be effective, but ivy is quite poisonous, so I wouldn't fancy the fruit then unfortunately :(