How Cold Tolerant is my Springer Spaniel?

We just got a Springer Spaniel yesterday. Her previous owner kept her entire coat clipped, so she has very short hair.

She has been accustomed to coming and going through a doggy door, so she could come in the house whenever she needs to. We don't have a doggy door, so we let her in and out as needed.

However, we don't know when she needs to come in because of the cold. Right now our temperatures are ranging from lows around 10 degrees and highs around 34 degrees, and the ground is covered in snow.

She can come into our unheated garage anytime, which I don't think is much warmer than outside. She sleeps inside, but I am wondering how much cold she can tolerate with her trimmed coat? And how much can she tolerate with a full coat? Does anyone know??

Thanks!