If it makes you more comfy to charge so extra, then at least you'll be doing her a favour but at YOUR advantage because you'll get extra that week. Plus its only ONE week right !

If it was me, I would charge my regular rate if she sticks to my hours, and if she really cant and its ONLY FOR THIS ONE TIME, I would charge the extra 5$ every 15 min. after hours and suck it up that week if I can. I dont mind doing favours again though.. at my advantage, why not !!

After hours would be fine for that week, but I cant do earlier in the morning then 7am. I'm so not a morning person I would need lots of begin lol