She understands why Legion didn't come to her rescue, but that doesn't stop her from being disappointed. Even now, she maintained the connection between them and left it open, but Legion-7 didn't use it.
She can tell that Legion is running away as fast as they can, leaving her to fight alone. Now she is weakening while the realm lord is getting stronger. Her end is all but certain at this point.
She does feel some regrets at this point. She regrets making Green Vine and Red Vine. If she hadn't, there wouldn't be the high elf race. If there were no high elves, maybe Monarch High Heaven wouldn't have appeared in her realm. Even if he had appeared, Green Vine surely wouldn't be available to betray her now.
Most of all, she failed to prepare for the betrayal. It is not exactly her fault, as she was restricted in what she could do by the world spark. So she has an excuse, but that failure will be her doom now.