The other thing is, without giving spoilers, there are sections of the game when she's not available, so you won't be able to retrieve it at those times. I've never found a huge need for storage, since there's no limit on how many upgrade items you can carry, and most of the weapons get outclassed and have to be sold anyway.
If you have trouble making line-breaks on forum posts, do the following: Make sure you go to the "rich formatting" screen (do not use the small, quick-reply window below each forum post). Now, hold down the shift key while pressing Enter at the end of a paragraph. Do this twice and you will have a double space between paragraphs. You're welcome.