Friendship troubles-HELP :P

Heyy!!! its samantha#1!!! But i want YOU to help ME with something today... Here it is... Ok so my friend has been friends with a girl from school for YEARS and i know her too. But recently she has been rude to us. She said a few things on chat she would regret later, and i wont say what or who due to respecting her privacy, but then a few minutes later she said she was sorry, and that she was just cranky and tired. She mentioned that she didnt mean to say those rude things, and took them back like she didnt mean it. The following week she said some ugly things again, them apoligized unwillingly. I dont know what to say, or how to react. Whether to be her friend again, or not. Any suggestions?