What does "avoiding mistletoe" mean?
Answer from a Native speaker
There is a western Christmas tradition where if you stand under "mistletoe" - mistletoe is a plant - you kiss the person you're standing with. People hang up mistletoe around their house during Christmas parties, like under doorways, and at random places, as something fun. So in this case, she wants to "avoid mistletoe" to avoid kissing people! Ex: Are you hanging up mistletoe, Oliver? That won't help you get a girlfriend. Ex: They kissed under the mistletoe that night.