A female friend of mine hugs everyone in my friend group the same but she hugs me differently?

For example when she approaches me for a hug she smiles calls me by a nickname she created for me then pulls my head down snuggles me in her breast while for my friends she just approaches them without speaking most of the time and hugs them quick and normally. She recently started hugging me like this and my question is she developing feelings for me or just extra happy to see me?
A female friend of mine hugs everyone in my friend group the same but she hugs me differently?
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