Why do I EVER listen to my mother??

I thought I should at least listen to her about plants, since she knows plants.

But a month ago, my cactus was doing fine. She made me stick it outside. Now it's dead.

My orchid was doing fine, too. I stuck it outside. Two days later, the leaves were turning brown.

My palm was doing as well as it had its whole life. She made me move it to the glass door. It's now doing the same, but makes my living room look bad.

I like those plants. I feel responsible for them. What have I done?