my bad if i misunderstood. i thought you meant you already talked to her on the phone. as far as how to get off the phone. just tell her you gotta go do _____ but you really enjoyed the convo. It's better if _____ is true and if you actually enjoyed the convo. don't say you enjoyed it if you didn't.
I personally wouldn't send her a text out of the blue hoping she has a good day or to tell her i enjoyed the convo. number one, chances are this early i don't really care that much about her good or bad days. and that's not even me being an a$$hole. that's just me being real. I can't tell you what to do though. I can only speak on what i'd do.
as far as contacting her or not, after the first call, it depends on the dynamics between you too. Don't do way more than what she is doing but be careful not to get caught up in a waiting game. matter of fact, don't play games with her. keep it real. if you tell her you will call her at a spoecific time, do it. if you want her to call you at a specific time, give clear instructions and if she doesn't follow the instructions, follow your gut. if things are kind of ambiguous, follow your gut, not your insecurities.
and finally, the most interesting part of your post. let me ask you a question, those chicks that told you it wasn't cool, what ended up happening with them? see their words said one thing but what did their actions say? were they still jocking you/talking to you afterwards or not? and again, not saying you should play games of ignoring them. what i'm saying is you should do what YOU feel is right and cool. if you,re genuinely busy or don't feel like talking, don't regardless of if they feel it's cool or not. go with your gut a little more. fukk what they're saying. do what feels right.she'll either feel it or she won't (don't overthink it)