<human>: Can you summarize the given text in a few sentences?

So I've been talking to this girl, via kik (a messaging app), for about a week. It's started off as playful but pretty soon, we both realized we want a relationship. However, we are taking it kinda slow. However, we both have a high sex drive, so we sorta sext (no pictures, just words). Anyways, my brother came up to me today and told me, "Mom told me to watch out what you say because she can see every conversation you send to someone" out of the blue. I questioned him and he admitted that mom installed something so she can see everything on my phone. Obviously, I'm mortified, but kinda suspicious, for several reasons. First off, she told me explicitly to NEVER text or talk to anyone during school. Well, I do (in my defense, ONLY during free time but she doesn't get that we actually have time or not doing anything during school, so I just do it behind her back. I always pay attention in class). Anyways, my question is is it possible for her to see my conversations on kik? Or do you think my brother was lying to me? I can sorta see him going through my phone and looking at my messages, but he's not really the one to snoop. If you're not familiar with kik messenger app, you can only log in to one account at a time, on one phone, and conversations are deleted between phones. She's not very good with software, so if I know if there IS something, she would have the Verizon (or T-mobile, can't remember, don't know if it's important to the story or not) people to install it, if it's in the hardware. I'm not connected to iCloud or anything. I am connected to her family plan, if that's makes a difference. Can she see conversation between apps?
<bot>: Can my mom read my conversations from the kik messaging app, on a different phone, on a different apple account?