Well, it is mostly a matter of priority and effort distribution.
For now we have made significant progress in explaining what happened to the colonies. Have something worth going back to report.
Next is the rescue of colonists. We are getting there.
Securing the dome to avoid having to fight even more security-bots would be pretty important too. Avoiding casualties would be nice.
E-Proto is trying to find one of our objectives, so she is essentially doing work that we would be doing anyway.
Using her might be profitable. There is the possibility that she would try to kill our target and that this is actually a race but it isn't the impression I had from the situation.
Getting more information from her would be easier if there is no tension between us and her (it). Pressuring her might actually draw hostility and make any further contact a problem to deal with.