Eventually I worked back up to one day a week, and then back to the two. A few weeks afterward, I was offered a permanent position. The fact that I was paid while out, even though I was a part-time employee, made my want to be loyal to the company, and the fact that I was loyal to them and returned to work made them see me as a valuable employee and someone that should be offered something full-time. (in my opinion)
Since then, they have been generous in leave time and also in accommodating me when I needed to bring either of my children to work. (I work for a newspaper) I understand not all companies can be so accommodating because of the type of work that people do, but for my job, I couldn't ask for better employers, or for people who better understand the importance of treating working mothers fairly, and the fact that when people feel supported and respected for the dual roles they are in as mother and employee, they are happier and more productive.