There are too many ways to handle such. I'll give one reply to each.
Her: I miss you.
You: I miss U-ni Jos. Switch topic immediately and say anything with step on chain. Example: Wait, is 2face from Jos?
Her: I'm thinking about you.
You: Is that a remix of the song titled, "Thinking about you?" Also think about how we can remove Buhari from seat.
Her: I love you
You: I love U-ganda more the US too. Change topic fast. If you're given both countries which will you prefer to travel to?
You: Naughtyheart or bitterheart or sweetliver or sweetkidney, etc.
Wants to see you desperately? Seems you've ChatDicted her. Please, don't ChatDict girls you don't like. ChatDicted is very powerful, so use it with caution before a girl commits suicide.