IMO - In my opinion.
What is the meaning of k in text message. The exclamation point is the most valuable punctuation mark you have in your arsenal but its also the most dangerous. Many of these are also used on the Internet particularly on dating websites forums and online classified ads. LOL is a common abbreviation in text messaging meaning laugh out loud.
Text abbreviations acronyms texting symbols emojis and emoticons. If you are into textual intercourse or social media you will need a comprehensive text dictionary. Keep it simple stupid.
I actually think k is going through a text message renaissance. If it is after a regular sentence she just added it so the sentence would seem happier. Sometimes it can be very embarrassing if you misunderstand an abbreviation or use one in the wrong way.
Means Cracking K the D as in Da freak up. Something between playful and desperate depending on usage. The Rule of Disproportionate Letters.
Receiving a K text makes everyone instantly furious NO MATTER WHAT. This one applies to messages received from a woman. Haha Tap to play or pause GIF.
It can come from a baby a puppy or a cat. IMU - I miss you. Up the meanings online so I can imagine that if you are an English language student it must be impossible.