Thanks for this question. 

we have some basic tools (see below a reference that can be helpful to you):

http://www.iycn.org/files/IYCN_Mother-to-Mother-Support-Group-Training-Manual_0311.pdf and http://www.iycn.org/files/IYCN_Mother-to-Mother-Support-Group-Facilitator-Manual_0311.pdf

Handout 1 provides for a very basic set of questions/indicators that can help monitor the quality of the MtMSgs activities focusing on facilitation.

It is a good start if we want to monitor the way the groups are facilitated and supported. 

Thanks

Alex