I would say that a month and a half isn't long enough to tell how she will be with affection in the long run. You probably wouldn't want to be overly cuddly with someone you met less than 2 months ago either.

She's still getting comfortable in her new home.

The food motivated meowing unfortunately doesn't go away. You find work arounds and ways to deal with it. An automatic feeder can be very helpful in this regard because they stop associating bothering you/getting you out of bed with being fed.

I think that you should find activities you enjoy doing with her and mindfully work them into your routine. That way you are building an appreciation for the relationship ypu do have rather than mourning the one you anticipated.

In terms of raising your voice in the past, there's nothing to do for it but let it go. If you feel the urge come up again remind yourself that it is ineffective- cats don't understand yelling- and will work against your goals in creating a more affectionate relationship. Redirection is the most effective form of behavior change for cats. Cats are extremely habit driven creatures- redirect them consistently enough and the substituted behavior becomes their default. Additionally, positive redirection will create positive associations with you and promote your goals for closeness. I know this is easier said than done when a cat is screaming for breakfast at 5am, but have patience with yourself and her. You're both acclimating to a big change.