So ex MIL has allergies to a million foods and she enjoys telling people about what she can't eat and the effects they have on her if she eats them. I get the sense she's proud of this. She's been convinced over the years that my kids, her grandkids (DS10 and DD7) are allergic to dairy, as is she of course. She went on and on about it when the kids were toddlers when I was still with her son (been apart almost 2 years) but she's not been so bad the last few years (probably because I see her a lot less!) although DS has been telling me for the last couple of months how ex MIL has been moaning to him about how he shouldn't be consuming dairy and he says he's also fed up of hearing it. I took my son to the GP when he was about 2/3 yo and asked about this and was told he didn't fit the symptoms and wouldn't do an allergy test because of this. She didn't accept this.
DS licks his lips terribly and I tell him to stop this and put Vaseline on but he keeps on doing it and they get really sore. I've told her before if I overly lick my lips and not put lip balm on then mine end up the same but of course, this is 'his dairy allergy'.
I was nights last night so my kids stayed at their grandparents who take them to school. I found out not long ago DS has had a day off school today as he had a bad cold yesterday. I've had a mild cold since Friday night so I put it down to him catching this from me. No cough or other covid symptoms before anyone mentions this. So I get the kids and ex MIL say she's giving me a carton of soya milk and dairy free butter because 'this is the reason he's been ill'. I told her I had a cold the other day and that I DO NOT believe he has a milk allergy and she wrote me off and said yes it is and just to give him those things she's giving me. She's an extremely pushy woman with whom you cannot with an argument and she is always right. One of the reasons I left my ex was because he wouldn't stand up to her pushiness. I couldn't be bothered to argue my case any further as I knew she would have an answer to whatever I said so I just accepted the stuff.
I've discussed symptoms of a dairy allergy/intolerance tonight with DS and he doesn't get any of them. He hasn't had a cold since before lockdown so how can a cold the week after they go back to school and a few days after I had one be attributed to a bloody dairy allergy?
I have no choice but for my kids to go to them when I work, I work nights and weekend 12 hour shifts and I have nobody else they can go to so I don't want to hear suggestions to find other childcare. My kids are always with me when I'm not in work as their dad is a waste of space and hasn't had the kids once since I left him. I know I should stand up to her better but I'm not good with asserting myself and when I've tried in the past she never lets up until she's worn you down. Any suggestions on how to proceed from here? Or is it going to be a case of putting my big girl boots on and telling her?