I had PND and only feel like I truly bonded with her a couple of months ago. I love her to pieces but I feel that there has been some effect on her attachment to me. She isn't really interested in me at all TBH, and has never really shown me any affection other than a cheeky grin. However she adores my mum (who is in a support bubble with us). My mum's partner came round with her today (allowed as they live together). She hasn't seen him since Christmas and only ever saw him once a month or so before that. She was clearly a little bit unsure, but she didn't look at me at all for reassurance, just my mum 
It has made me feel terrible.
She is also a bit behind with some of her milestones, not the physical stuff but she doesn't respond to her name or babble much. The HV is going to repeat the ASQ with us when she's just shy of 13 months (just over 3 weeks time).
Is there anything I can do at this stage to improve the attachment side of things? I feel quite heartbroken about it and like such a terrible mum.