Re: how to ask a girl out I haven't talked to in a while!!
That is a definite no with the planned texts. Since you're basically starting at ground zero, pushing for a meetup in the first couple of messages is far too soon. This is possible, but you need to build up rapport and attraction first before you do anything.
If you want to make an effective entrance, play around with her a bit. Wait for her to post again, be observant of the details, and then send her a message incorporating the post. Say something along the lines of "Hello stranger, 'blah' 'blah' 'blah'".
"There is no better than adversity. Every defeat, every heartbreak, every loss, contains its own seed, its own lesson on how to improve your performance the next time." - Malcolm X