I have a 6 yr. old staffordshire X. She's starting to become really needy. Forcing herself on me, pawing at my face, and when i leave the house she howls and yelps constanly until someone comes home. She has only become this dependant for the last 6 months. I also have a boxer and a boston terrier and their not showing behavior like this. Is she just too spoiled?

Optional Information:
Age: 6; Female; Breed: staffordshire X

Already Tried:
nothing, i still give her the attention that she seems to demand all the time. I even take her for car rides so that she wont howl the whole time that i'm out running arrands