Well when it comes to Lyja or these soapy type situations I tend to be more of a s__t or get off the pot. There is only so much time that a returning, questionable character should be allowed a grace before considering or actually seeing they are evil.
So if Lyja doesn't do some serious damage or intrigue, we may not see it. I wouldn't find it convincing. So she must be there to move the Sky plot along in some way. That seems lame, whether you like. or loathe the character.
But Sue originally said something to the effect that this was like Crystal all over again, and that caught me. Because I do believe that Johnny Crystal was really the Romeo/Juliet story of the MU, and so sad that it could never be realized. I don't feel that way at all about Sky.