Pretty much. Think of what you like about her personality. This is a good chance for you to actually think about what qualities you appreciate in her (or if there aren't many, or any at all).
I've had a few people tell me they like me (even told me they loved me), and asked them "Why?" in response. It's a fair question. Anyone can claim to like/love you, but only a person who means it can elaborate on the things that make it so.
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