Good for her. She defended herself and her home. But...she made a mistake that made it way more difficult than it had to be...
Home security tip: No stranger gets in your home! Ever. If in doubt, keep them out. Defend yourself and your home.
If you have a storage unit that you do not visit often it would be a good idea to go and check it. Call the Sheriff's Office and report it if yours has been entered. This is a good idea for anyone who has a storage unit. Visit it every so often to make sure all is well. You'd think that the owners/managers would notify you, but I guess better safe than sorry :-)