12 weeks pregnant- best friend miscarried

So my best friend of 16 years suffered a dreadful miscarriage in august last year, me and my SO decided we were ready to start a family at Christmas time, I did tell her about it and have been really sensitive about the matter, now I'm 3 months pregnant she has been avoiding me like the plauge and it's really heartbreaking to go throu such a happy time without her, what to do?