Is this reason to be mad in a serious relationship?

Before I go and make a fuss I want to see if I am not over reacting, If one of my messages is read, and the person has gone online several times after that and still haven't responded , do I have reason to be mad, and how do I approach her about it

♠ Merlin ♠2017-01-18T13:32:06Z

Is your message an emergency or very important?
If it is, then yes, you can be upset

if it isnt important, then no, you have no right
its up to her when she answers,
i read a message and if it doesnt requite an instant response, and I am busy, i will leave it until i can dedicate time to replying properly
If someone messaged me something unimportant and "approached me" about not replying instantly, i would tell them to wind their neck in and block them, no one needs that kind of drama in their life, I left that behind in the school playground