"That's the effect meat will have on me. Even the smell of it, I don't like.
"I didn't actually eat it, I bit into it and straight away I vomited. I spat it out and threw up.
"I didn't think to look in it, I just thought it was a veggie burger."
Davies said she now can't trust "anything from McDonald's to be vegetarian".
"It's not the best place to get vegetarian food to be honest if they're that careless. I feel upset and a bit betrayed."
"It just reminded me of being a child in my grandma's kitchen, just the taste of it. It made me feel sick even then," said Davies.
Fortunately, Davies said she was able to drink a fruit smoothie the morning after the incident.