<human>: Can you condense the text into a few key points?

My dad was not a super affectionate guy. My mom is and now I'm starting to feel like its codependency. I'm not sure if I have some issues with being uncomfortable with her affection but it's really starting to grate on me. She'll hold me or touch me in public and I've told her I don't like this because it makes me feel like a baby it's also embarassing because I am an adult woman and it just looks odd. 

I no longer live with my family and when I come to visit I want to hang out with my brother a lot and my mom will often ask me to hang out with her and talk which I've done but I think my relationship with my brother is starting to suffer because I hardly see him when I come over anymore. 

She'll snuggle up to me like a baby and showers me with affection and it's becoming too much. I have a hard time telling her to stop because I feel like it breaks her heart but Im starting to feel like im maybe enabling some unhealthy attachment issues and hate that my reasons for doing so are out of pity I don't want to pity my mom. I also think I have relied too much on her for emotional support by oversharing every detail of my issues with her. 

How can I show my mom love and affection without enabling this behavior that makes me uncomfortable and leaves me with little time to invest in other relationships.
<bot>: Mom smothers me with affection and always wants to talk, keeping me from spending time with my brother. Is this codependency? How can I show her love while also getting space?