Help with a very whiny cat?

I'm honestly starting to think my cat is psychotic. She's a fixed, healthy (formerly) female cat who never stops whining. I pet her, but she whines when I pet her! She doesn't have any other behavioral problems that I know of. She's declawed and doesn't make scratching motions and I haven't seen her pee anywhere but her litter box. I knew her mother, and she wasn't like this. I did what I believed was right for her and waited for the mother to wean her, then gave away her sister and mother when they were around six months old. If it makes any difference, this was her mother's second litter, but because at the time, the mother was owned by a friend, I can't tell you what the psychological profile is of her previous kits. We also lived in an area with very few cats in the gene pool.(It was rumored that there were only five cats in the gene pool starting off.) She wasn't breathing when she was first born, but I maged her and she survived. Her sister was also whiny, and we think her brother might be retarded. She's two years old, so I wouldn't think that she'd start having problems yet. We don't know who her father is, so I can't tell you anything about him psychologically. Her mother was an alley cat, so presumably her father was, too. Please, I'm at my wit's end here! Since she's been able to, she's never stopped meowing. She doesn't even purr or hiss when she's attacked by my other cat, she just meows! I don't have enough money to take her to a cat psychiatrist, and I think I'm about to go crazy!