I'm with you Rilke, she's fully capable of doing this, if she puts your post and mine together, she's got a fully working spell with intent specified, the candle set and ready, I mean you can get a pillar candle from wal-mart for about $2 or $3 dollars, and she's all set to do the spell and not spend hardly anything.
Aingeallover, set up a piece of paper starting with Rilke's suggestion (if you know how to write your own spells this should be natural by now), and fill in the major questions - What is my true intent, what needs to be healed, etc...
Write out the general spell you are thinking of using, (if you can't buy a candle you can always visualize one forgot to mention that earlier) and use it at a basic guideline, and then combine everything to really formulate the spell. You can add phrases or chants if you want, etc... It's your spell, use it and roll with it.