Personally, I felt, after playing Isolation, that Burke was lying. Now perhaps he was just telling her what he knew, but it would be misinformation regardless. Why would WY want a lower-level exec to know about a different station that fell victim to an Alien encounter when they can just tell him that Ripley is very important to them and they want him to utilize any means necessary to have her fall victim to a facehugger and transplant the creature back to WY for surgical removal?