Changed into an Elven Goddess! Part 1

Julie and Harold were hiking the Andes when they came upon a strange, undiscovered temple hidden away. Inside they find an ancient ornate box with strange writing on it. As a linguistic expert, Julie has no idea what it says. The writing is unlike anything she’s ever seen before.
If Harold opens the box, things will never be the same again…
Of course Harold opens the box, but what happens next neither of them could have ever predicted in their wildest dreams.
Excerpt:
“Honey? What on earth is this?” My wife, Julie, asked as we explored an old, pre-historic temple in the Peruvian mountains.
I peered over her shoulders, shining my powerful flashlight down at the intricately carved, gold-laced box that she was holding.
“I'm not sure,” I said. «Can you read the writing.
My wife was a language scholar. She pretty much knew every single language in the world. Not good enough to read necessarily, but she could tell you unerringly which language she was looking at and from which time period.
She shook her head. “I…I don't know. It's not written in any language that I've ever encountered.”
She looked back over her shoulder with a worried look on her face. “Harold, something's not quite right here…”
Seeing my wife's puzzled/frightened expression sent chills up and down my spine and my flesh broke out in goosebumps.
I took a deep breath and took the ornate box from her trembling hands, so I could get a better look at it. I knew a tiny fraction of what she did about languages, but I couldn't make heads nor tails of it, either.
“What do you think it says?” I asked.
“Knowing what we learned about the Ancient Egyptians, it's probably a warning.”
“Or a curse,” I said ominously.
My wife shivered at that thought.
Without any hesitation on my part, I opened up the lid.
“Oh my God, Harold!” She put her trembling hands to her mouth. “What are you doing?”
“I don't believe in curses.” I waved her concern away.
My wife started to protest, but realized that if it was protected with a curse, it was too late to do anything about it.
“Yeah, but…”
“It's all right, Julie, curses are for the superstitious and feeble-minded. Neither of which apply to us.”
When I shined my light into the box, I noticed that there were two perfectly preserved vials of liquid.
“What on earth are those?” My wife asked.
It was my turn to shrug my shoulders. “Looks like vials of some liquid.” There was a red vial and a blue vial.
“Yeah, I can see that…” Julie hissed. “But what do they do?”