There is this one coworker at work who is responsible for the end stage of a certain process. In other words if you have questions that documentation does not answer, you have to go to her to get the answer.
At the same time, said coworker and I end up causing friction with one another. She used to be my manager and I moved to another team in large part because her team shrunk the moment I joined it and she treated questions as "focus on your work" as opposed to "hey he hit the edge of his knowledge, maybe he needs my help". So I took the full brunt of the team work as the new guy coming in barely learning something with a manager who saw ramping me up to the team as an obstruction. Regardless, here is the scenario.
I once had to follow a certain process on the wiki. There were subtle details that I screwed up that the wiki was not explicitly clear on. So I ask her a question about said ambiguity (note: In the question I didn't originally state whether I read her wiki or not, didn't think it was needed).
She then responds with "Did you read the wiki?".
I, upon further realization saw what the difference was and corrected it in the wiki, in addition to another detail that I knew was wrong. I responded to her stating as much.
She then responds with
Mr. Last name
Please do not touch the WIKI. Our team controls the PROCESS. Follow the other email sent by teammate.
The email sent by teammate was sent after I already did said action that teammate proposed. Luckily I had a two week PTO vacation the next day, so a teammate took on the task of finishing up the process while I was out. But I will likely have to ask said person a question again since she is responsible for this process. I really, really want to avoid interaction with her because I feel like I will get needless hostility, but it may be necessary should I stumble upon an ambiguity again.
How do I interact with a coworker that is necessary to talk to, yet responds with hostility.