It's only posh burgers anyway.
https://thepigandapplemonmouth.co.uk
(Surprisingly cheap though. Places serving 'designer burgers' around here often charge nearly double those prices).
I hope that your SIL will make a quick recovery and that you'll all be able to enjoy a meal together soon.
I was planning to go to a big firework display tonight. (It's the main one in Ipswich, which usually has about 10,000 spectators). I used to go every year but I've missed out on it for more than a decade, due to a mixture of other commitments, low finances, health, bad weather. However I think that I must be getting old. I simply couldn't face the hassle of driving into town, finding somewhere to park, waling to the venue and then trying to remain Covid-safe all evening. So I've stayed in and been here to reassure the cats when fireworks have been going off around here tonight.