Part of your question did not post properly so that may have an effect on the responses that you get. I believe you are in the right category for posting but a Ranger may come along and re-tag so that it reaches a wider audience.
You are a profile manager for Margaret Golightly so you do have full authority to edit. Since there has not been any activity on there since 2015, I do not see any problem with proceeding. The category is open and there is no project protection. The sources that are on the profile are gedcom links to a subscription site which does not help our community.
Just to be courteous, you may want to send a private message to the other 2 managers that says you have better sources that would be helpful to the WikiTree community for this person and their family. Perhaps, even give them a sample of a source with better links; and, then wait 1-3 days for a response.
If no response, then continue to build the profile according to WikiTree standards. If they do respond, then you can start collaborating.