As a volunteer for the local American Cancer Society I would like to suggest that you check out their website at www.cancer.org. It is full of VERY useful information, both for you and your daughters. If you don't find what you want or need, or it is just too much information to take in please consider calling the local office. Their phone number is ###-###-####. I know a couple of the ladies in that office, they are wonderful and VERY knowledgeable. They will go above and beyond to help you find anything you need.
I also want to suggest that your MIL, if it turns out she has cancer, contact the American Cancer Society. They are full of any information your family could possibly need. They also have programs and support "groups" to help your MIL and the rest of the family. They have people available to talk to that have gone through what your family and MIL are/will be going through. They can help you know what to expect and when.
Another thing, if your family does not have plans this Friday night... There is a Relay For Life event at Blue Valley West High School that starts at 7pm. This Relay is a youth event so it will be full of things for the kids to do. It will also be a great source of information. You will be able to learn about everything the American Cancer Society has to offer. What it offers those battling cancer and their caregivers. It is a FREE event to attend. However, there will be many activities and things for sale with all the proceeds going back the the American Cancer Society to help fund the wonderful programs they offer and the many research grants the provide for Cancer prevention research.
The Relay will also help teach your daughters that there is life after cancer. It can also be a great opportunity to volunteer, your daughters are not too young to help. (My son who will turn 3 in July has been 'helping' since before he was born.) If it turns out that your MIL does have cancer, volunteering may give them a sense that they are helping grandma get/feel better. Even the 3 year old will take pride in that.
I hope this helps and that your MIL doesn't have to go through the battle. If she does have to go through the battle, she is not alone and their are many people available to help in anyway possible. It is a lot to deal with but there is also A LOT of support out there.
If you would like to talk more about it or just want more information, please feel free to send me a private message.
Hoping nobody has to deal with cancer!
L.