Genuinely have no idea where the opinion of this will sway but i'll give a bit of context.
We have a project about to go live in 3 weeks, I own this project. A particular sub-department is in charge of one part of the project and is headed by a woman who also happens to be the only person in that sub-department. Unfortunately, she fell ill and seems to have not told anyone that she had remained ill past the original day she called in sick. It's now been a week since the original day of illness and neither me nor my boss (who she reports to) has an idea of whether it's something long term(eg broken bone/mental health) or something more short term like the flu.
Unfortunately the part of the project her sub-department is on the critical path, this means there are strict timelines that need to be adhered to and quality sign offs that need to happen before we can move to the next step. I want to email her to ask 1) when she'll be back & 2) who I can delegate her work to in the meantime so we stay on track. However, I've been told by some other colleagues that i'd be badgering them if I did so.
So AIBU to expect an answer from my colleague if she feels better for 5/10 minutes during the day or should I expect radio silence until they're fully back and well.