Irrational pregnant lady rant

Jamie • Momma to my sweet girl and another blessing on the way! And wifey to my good man!
Hubby's 82 year old grandmother lives with us, right? I'm about to lose my damn mind with her. She steals my house plants and puts them in her room "to get more sunlight" and then I never see them again. I bought them so that I could enjoy them and see them grow. Now my aloe vera plant has been taken hostage and she's probably going to water the poor thing to death. 
It's so ridiculous, I know. But it drives me insane!