Perhaps. While I don't see Elsa being an altruistic person, we don't really know. She
has material wealth, yes, but we don't know if she actually cares for it, or if her fancy stuff was simply provided for her.
As for being needed, I can see that more easily. She is too polite to say it (maybe even to herself), but she looks down on Edward and I could see her enjoy being the most important person in someone's life who she considers to be beneath her.
As a fellow cynical misanthrope, I hesitate to label her "unhealthy" but I can see how one might. But we simply don't know enough about her to declare her unhappy. Remember, we only see Edward's perspective and Elsa deliberately keeps him away from her personal life. Aside from a brief exchange at the police station, we've never seen her have a personal, non-transactional interaction. She could have a whole different life outside of work. I base this assumption on myself - work me and family and friends me are two
very different people
I agree with the observation, but not with the conclusion. Alice strikes me as nouveau riche; she is ostentatious about money. Her showiness and exuberance feel like cover for an empty life. Elsa, on the other hand, exudes old money vibes. Despite being just as privileged, her approach to wealth is more private and subdued. Even her clothes are understated. She could very well be enjoying her wealth to the fullest but in private, with people she is actually close to. That seems a lot healthier than what Alice is doing.
We only see Elsa through Edward's twisted psyche. She is cold
to him, yes, but I don't think we can deduce her romantic side (or lack thereof) from that.
These I agree with completely.
I think her mix of intelligence, confidence and demeanour oozes sexuality, but not sexual availability. That just increases her desirability for me, but I admit it would be a turn-off for some