Maybe "Lily" -- it's a type of flower, it's used as a name, easy to pronounce, and sounds interesting with your family name.

Lee Li我觉得挺好，也有花朵的意味在里面，还押韵

Is your last name Li? If so, how about Hannah for huahua?

I don't know the name Phapha. Maybe Philippa or its nickname Pippa? This is the name of Kate Middleton's sister.

Fiona Fung