My cat is constantly meowing and purring?

I recently started a new job full time. So I'm not as round as much as I used too. My cat has been constantly meowing at me, being all in my face and purring.

Ive been feeding her, changing her litters and making sure she has water.

She doesn't do this to any other family member but me. I let her purr and meow in my face, I just pet her and she falls asleep on my lap.

However she started to scratch at my bedroom door at night, I caved in and let her come in my room, she slept under the covers with me and has done this for about 5 nights!

Do you think that there's something wrong with her? Maybe she's cold because it's winter? She is only 1 and she is an indoor cat.