Issue w/ dying phal and attached keiki

[Paul Mc]

I've been fighting one of my phal's since spring last year when the roots got infected. It has been slowly dying since then. On the last bloom spike, it started growing a keiki around summer. The keiki now has three leaves, the longest is about 3 1/2 inches long and it has a bloom spike starting off of it with 3 huge flower buds.

The problem is that the keiki does not have any roots yet, and I just noticed today that the mother plant's top and best looking leaf (which was sad already) has folded itself over and is preparing to die. I examined the roots and they are all dead and diseased looking.

On the spike with the keiki, it appears that the node just below the keiki has growth on it as well now!

So, since my keiki doesn't have roots and it appears to be impossible to save the mother, how do I ensure that I don't lose the keiki. My concern is that with no roots it won't be able to survive. Is this an accurate concern, or will the dying mother force the keiki to produce roots of its own? Should I cut off the flower spike (I'm almost in tears thinking about that, lol...).