Well, I would likely have filled your spot for the first month, then called you a week or two before this month started to find out for sure if we were back on, and rearranged the schedule. I would have made sure the client who had started when you stopped, knew that the time they had this one month, may not be available the following month. If you were a regular client, I would personally try my best to keep you, even if you did have to take some time off.
Now, if you hemmed and hahhed about whether you could continue, I would have continued, no doubt, with the client that was currently working at your time...I would have to keep the client who is being consistent, and not take the gamble on whether you were going to come back or not.
"The ideal horseman has the courage of a lion, the patience of a saint, and the hands of a woman..."