equestris first bloom turns into keiki

[Phyrex]

I have a phal equestris v. rosea in a 2.5" pot and the leaf span is about 5" across the plant. It put out its first spike but due to underwatering the buds dried up. After about a week I thought it was putting out new buds but it turns out to be a keiki. Can the plant handle a keiki at this stage of it's own development as it's only 5" wide? Should I terminate the spike and kill the keiki to ensure that the mother plant grows stronger? There is currently no sign of struggle on the mother plant and she has a very good root system. What should I do?