What does it mean when a girl says, "you're so sweet" or "AWWW, * insert name* you are just the sweetest in the whole world" ?

So there is a girl I like, and I am pretty sure she knows I like her. Lately her life has been stressful and hectic, and she needed some time to unwind and breathe. Let's say I met her on a site and we have been talking. We have also been messaging off that site on another chat app. I thought that I would check in to see if she was ok and to give her some sort of support. When she replied to my message of, " Heya! I just wanted to say that I hope you doing well. I was trying to find some funny memes to send your way, but I wasn't able to find any great ones. I hope you are getting plenty of time for self care and summer fun. You are awesome, and have a good one" with "AWWW, *my nickname* you are just the sweetest in the whole world" what does that mean? She said that she was doing ok and I am really happy to hear that. I care about her, and if we didn't live so far apart, I would ask her on a date. If we didn't live far away from eachother I would go and help her with anything she needed. I was just curious if there is something I am missing, or just really stuck in my feelings. Thank you for your time.
What does it mean when a girl says, "you're so sweet" or "AWWW, * insert name* you are just the sweetest in the whole world" ?
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