When she will come?

I'm sitting in a cafe and waiting my friend whom I haven't seen for a long time.I missed her so much that I can't wait the moment when she will come! But I'm waiting her for 10 minutes already and it's not suprisingly for me that she is late! She often comes late for appointments. To be honest,sometimes it's irritate me really.Not only me but other people who have to wait her. Recently I called her and she said that she is coming and will be here after five minutes. Well being punctual is not about her... That's her nature)))
Whenever I will wait her,at least I have to)))

Correction: I'm sitting in a cafe waiting for a friend whom I haven't seen in a long time. I miss her so much that I can't wait for her to get here. I've been waiting for 10 minutes already and I'm not surprise that she's late because she's often late anyway. Sometimes it irritates me. I called her recently and she said she will be here in five minutes. Being punctual is not her nature.

1. "I'm sitting in a cafe waiting..." is enough. "And" is not needed here.

2. "...can't wait the moment that she will come..." When she gets there, it would be an event already (a moment) so there is no need to use the word "moment." "Will come" seems too far in the future. Use "to get here" because it's morein the present.

3. Never use the word "but" after a period. Begin with "I've been." Been makes it seem like a long time has passed since you're been there. It's speaks more about the past. Use the word "surprise" here to describe your reaction. "Suprisingly" is an adjective. Combine the sentence "she's often late" with the previous sentence because it's explaining why you're not surprise, so it's better not to chop it into a different sentence (because it's not a different sentence). "I'm not surprise because she's often late anyway" instead of "I'm not surprise. She's often late." It flows better.

4. "Sometimes it irritates me" says enough.

5. Saying, "I called her recently" flows better. There is no need for the for "come" here because when you say "she will be here in five minutes" it already means she is coming. Using the word "come" here will be saying, "she is coming coming."

Hope this helps.

When she will come?

I'm sitting in a cafe and waiting for my friend whom I haven't seen for a long time.I missed her so much that I can't wait  for the moment when she will come! But I'm waiting for her for 10 minutes already and it's not suprisingly for me  ( or, it's not a surprise to me) that she is late! She often comes late for appointments. To be honest,sometimes it's irritates me really.Not only me but other people who have to wait for her. Recently I called her  (I just called her)and she said that she is coming and will be here after  in five minutes.

Well being punctual is not about her... That's her nature)))

( you might say - being punctual is not part of her character, or, it's her nature to be late)

Whenever I will wait her,at least I have to)))

( I'm not sure what you mean here...? Perhaps you mean - I will wait, however long she takes...)

I noticed in your first sentence the correct usage of "whom" - so well done! :-)

I can feel your frustratation with this late friend...I think we all have one!