Can I put a lock on my iMessage?

My mom likes to read my texts… I have iPhone 4. Can I make it so when someone texts me, it only pops up on the lock screen as "message from ___" and also, is there an app that can put a lock on iMessage so no one can just open my phone and go through my texts. (I have a Passcode but my mom always seems to figure it out. And I have to tell her or she'll ground me)

  • Iphone lock button broken, is there any alternative to lock iphone? My iphone 3G lock button is totally damaged and is out of warranty and I can't afford to get it repaired. I was wondering is there any app which can convert "silent" button to lock button. Or may be an app on which i can manually lock the device. By the way my Iphone is jailbroken, and "accessibility" is not accessible.
  • IPhone can't send iMessage to iPod touch user with iMessage? At random times, whenever I try to iMessage my friend who has just a iPod Touch, where you type in the message will say "Text Message" instead of "iMessage." is there a way to fix this so it will always send as a iMessage instead of Text?
  • Iphone 5 folder lock or app lock? If anybody know iPhone 5 have feature for pass ward lock for app or folder. Ex: (Something like when i open text message i like to put some password ) Or i can put some few app in one folder when open it have to ask passward) I know it have app for video and pictures.
  • IMessage won't send to another iPhone with iMessage? So my iMessage works to all my friends that have iMessage except one friend in particular. He has iMessage on his phone and can iMessage all his friends but he can't iMessage me. We both have iMessage turned on on our phones but they simply will not iMessage each other.