You should split test this.sorry to bust your bubble but if she recently started bleeding then according to the menstrual cycle she is about 8 days from being fertile again. Sperm only survives in a vagina 72 hours. I would drop that survival rate considerable after riding a kotex.
The tampon packages have to be ripped open to get at the product, and can't be resealed. Once you tear the the wrapper, the packaging is totally damaged.