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Thankyou all for your comments, really useful to get other peoplespoint of view, especially new mums which i cannot really identify with!
As it happens, oddly enough just after I posted this email, and thought about calling her husband, she text me to say sorry for delay, manic with baby, doesnt have time for anything any more which is kiind of as i thought, though did start to worry a little.
I havnt text as much just to ensure she doesnt feel overwhelmed with messages as she did say she was still getting lots of visitors too. I text her at the weekend to invite them over for sunday lunch in couple of weeks to give them a break from cooking and thats now in the diary which is nice= and she did seem genuinly grateful.
I would like to call more rather than text but always worry now about waking baby, or her if shes having a nap, or when the baby is screaming!! Appreciate friendship will change a little now, but always expected it to. Just want to make sure I try and be a friend that is a help more than a hinderance!!
To add to my original post, she is also bridesmaid for my wedding next year, so have held off talking weddings until she is up to speed with 'baby'!