Also have a glossy, long-haired pregnant mother...given to me by a woman who was thinking to trap and have her spayed. I told her that I couldn't that, and the woman felt the same way, but was confused. Had not thought it through, first time with this situation, and advised that to do the abortion was usual practice. It is, in the cat rescue world. I have in the past assisted in surgery in a large volume (up to 200 a day) spay/neuter clinic, where babies are taken out of their mothers, many at full-term, and disposed of like trash.
So the mother is here, with the other mother and her babies...getting along with the other mother fine, happy to note! It is stressful for her, but she will be cared for and the babies will be safe. Husband Ken does not know about her yet.