I think DonS is referring to the fact that you had to ask these questions as being bad.
You didn't pay for her flight = good
You ignored her texts when she started talking about her ex and her problems = good
You got some flirting in = good
You got her wishing she was home = good
You told her you missed her = not good.
Overall I think you are doing okay as long as you aren't obsessing over her. Her interest level in you obviously isn't that high so I wouldn't be showing too much interest back.
You didn't pay for her flight = good
You ignored her texts when she started talking about her ex and her problems = good
You got some flirting in = good
You got her wishing she was home = good
You told her you missed her = not good.
Overall I think you are doing okay as long as you aren't obsessing over her. Her interest level in you obviously isn't that high so I wouldn't be showing too much interest back.