[anrakushi]

Howard - if you want to get technical even Japanese will at times when using romaji write a C instead of a K and if you noticed when you type on the keyboad CA = か just the same as KA. so lets just let her enjoy the C on her name ^^

Riccado - it is correct the only thing i want to point out is the ku sound would not be pronounced strongly it would be a soft ku sound, with the emphasis on the sound of the K rather than the u.
the script your name, like all others, is written in is katakana.