Makes you wonder what kind of life she had before the poor thing. Please have patience. It will get better I promise. All my cats had an adjustment period to the rhythym of the house. Rocko was very food oriented, Fiona woke us up all through the night. They eventually realized food was plentiful and we humans like to SLEEP during certain hours and will not give them attention during those times. I would reach out a hand to Fiona in bed and pet her or scratch her but I would not get up or talk to her much.
They eventually get more secure. But they need routine to get that way. Feed them around the same time everyday. Play with them around the same time everyday. Give affection around the same time (usually before bed is a good idea, than they learn after love comes sleepy time
For an example this is my routine. I get up around 7, feed them than clean the box out so they can use a clean box after they eat. I play for maybe 5 mins and give lots of love while getting dressed. I go to work, come home. feed them again, clean the box again (i have three cats). Than watch tv while they take turns coming over and getting cooed over and played with.
Than before bed I give them their "crunchies" dry food (so they leave me alone at night) and we cuddle in bed till they find a comfy spot to sleep and we go to sleep.
When I first got Fiona I played for at least an hour with her because she is a very active cat. Rocko is more of a cuddler and needed more cuddle time when I first got him. If I was walking around too much he would follow me around till i settled and than hope up on my lap purring and wanting to be petted. So depending on your cat will depend on what it needs to feel secure. Once you give them that security it's a lot better and the neediness will go away.
Give it time and patience. the reward is a great friend!