Three weeks of rain without a single bit of sunshine must have been too much for her.
The roots probably suffocated in the water and started to rot.
Surprisingly, the 2-3 weeks younger tomato on the right which went to the exact same conditions, does very well.
Pic 2 are fruits on the tomato with the yellowing leaves, I hope they will do fine.
On pic 3 you can see how mushrooms are sprouting next to my strawberries, it really has been very wet the last few weeks.
Pic 4 is the cannabis plant I put in the forest far away from here. A bro checked it out and sent me this pic - you can see how it only gained height without producing any new leaves because it was desperate to reach the light within these last 3 weeks of rain.