Well, if you're in 3B, then you obviously don't have the Fralthi already
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A brief explanation of UE paths. There are three paths - winning, losing, and middle.
The winning path, of course, requires you to keep the Fralthi alive. There are one or two missions that you can lose without sliding off the winning path, but most of the time failure does knock you off it - and it's impossible to get back on the winning path. If you stay on it, you eventually get the ending scenes 1A and 2A.
The losing path begins after you fail mission 3 (either A or B - it makes no difference), and ends after mission 5B. Once you're on this path, there's no way back - but there's only one opportunity to get on it. After 5B, you get the ending scene 1C.
Finally, the middle path begins at any point when you lose the Fralthi. This path shares some missions with the winning path (for example, 5A is the same regardless of the Fralthi's status, although the fiction is slightly different). This path ends with ending scenes 1B and 2B.