I'm a bit confused Ms. Brigid.
Did yer sister download any new texture packs to make each player's character look, as you proclaim, "fuzzy"? Or is it somethin' else entirely? Some screenshots and a bit of additional details would be splendid madam so I can get a better concept of what ye' need help with.
As for the caps lock typin' in lowercase, if ye' press the Shift key 5 times fast, it'll turn sticky keys on/off. See if the link below will help ye' out any with that case problem (I personally do not own a Mac IOS thus if my information is incorrect, I give ye' my sincerest apologies) :
Click here. (http://support.apple.com/kb/PH3958)