Hi, my daughter had the same problem and it took a year or two or even longer until she was comfortable using "unknown" toilets. I did pretty much what you did - covered up the automatic button and waited until she left the stall. Once she was outside, I flushed for her. That was an OK interim solution, so that she didn't have to have accidents. I remember being very frustrated about this and even scolding her at times. Looking back now, I can say she was really scared and it wasn't an act (as I sometimes - uncorrectly - assumed). And then, one fine day, she went, she flushed, she smiled and said "Remember when I was afraid of the flush? I thought I would get flushed down, too. Now, I'm ok." So, I guess, some things just take time and patience. Hang in there!
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