I guess this might be a bit obvious but I'm not sure what to do, my really good friend has a little girl close in age to my daughter who is 2yrs 4 months and we spend quite a lot of time together.
The girls are always excited to see and play with each other but really struggle to share things at times (on both parts) it can escalate into a screaming tug of war over certain toys and if I don't get there quick enough my girl gets bitten - really quite hard (draws blood/bruises)
My friend does tell her LO off but she doesn't seem to take any notice, her speech isn't very good so my friend asking her to say sorry seems a bit pointless (because then all the focus becomes about waiting for her to apologies, which she doesn't)
I just worry that my little girl is a bit confused as to why I don't tell her friend off and asks me why she doesn't say sorry etc and is understandably confused as to whether her little friend likes her 
I've pretty much stopped going to their house now but we go to a number of groups together, I don't feel it's my place to tell the other child off and I know this is 'normal' two year old behaviour but its been going on too long (a year at least) and its just not on!!! Argh help?!?!?