I should start by saying that I'm really close to MIL and although she drives me mad sometimes, I love her to bits.
Lockdown has been hard for her as she's on her own now (FIL died several years ago). She lives in a lovely village and has lots of friends so she's been missing her normally very busy life. I've spoken to her almost every day and the days that I haven't DH has and both DC's also ring her independently too. I make sure she has all the shopping she needs etc.
She tells me that she's being very sensible re lockdown but then will mention that she's had a friend round for coffee in her house, been out walking with another friend ('we didn't worry about social distancing out in the open') and spent the afternoon this week down at another friend's house who she has previously told me 'has far too many visitors'.
She's interpreting the guidelines as she sees fit and although I ask her to please be careful, she's almost 80 and will do whatever she likes but she's not a child, she is making her own decisions and I am not the lockdown police.
The problem now is that she wants to form a bubble with us. I have been shielding for 10 weeks now but more importantly, so is DD as she has a serious autoimmune condition. DH has told her that it's not appropriate just yet (he has been to see her several times with DS and spent time in the garden when the weather was a bit better) as we are both vulnerable but the real reason is that he knows that when she's not with us she will continue to see other people too and neither of us want to put DD at risk.
She is a lovely woman, but she is bloody-minded and will quite happily tell a little 'white lie' to suit what she wants to happen. She loves DD to bits, she just doesn't think that she would put her at risk by carrying on doing what she is already and considers us over-cautious, so with that in mind, wouldn't necessarily be truthful with seeing other people.
I don't want her to get ill. I don't want DD to get ill. Now MIL is really hurt, which is the last thing I want, but we need to put DD first. Any suggestions how to make this a bit easier? I know it's hard for her being on her own. 