This is all post-shed. She locked up two weeks ago, during her shed, and shed about 3 days after the lock. That's when I started to notice signs of an RI. She was making popping sounds as she breathed, and I was concerned but kept mindful that it may be due to her shed. I kept an eye on her. Then she started resting her head higher than her body, and that's when I was pretty sure it was RI. And then by the day I took her into the vet, on Monday, she had developed intermittent "gaping" of the mouth. Yet, another clear sign. Upon the vet's initial check up, she had very minimal mucus, but it was still there none the less.
I'm just going to give the veterinarian a call later today... Just seeing what you guys had to offer.