Cheer was just being diplomatic. If she can film more than 1 lakorn and not have her business get in the way then she can film this lakorn too considering it was a very long notice. I also think channel 8 has a lot to do with it cause once she accepted the lakorn with that channel, channel 3 felt like she has crossed over to the enemy lol.
Beside, Cheer just started with channel 3 she is not going to straight up say, yeah...the channel pulled me out. Nah, a smart actress would play nice and try not to burn bridges.