I'm not sure if this is the right place for this so please bear with me.
I have 1 SIL who I've met once, about 14 months ago. DP and I had DC1 this autumn, we let her know of baby's arrival but had no response. A Christmas card arrived signed from her but not addressed to anyone
We've sent a nice card with a framed baby footprint and a photo, and again, no response.
How long do we keep trying? DP is really upset as both their parents have passed away so she's his closest relation. He accepts that they aren't close but is taking it really personally that she won't acknowledge the babe.
Any advice gratefully received!