I'm curious as to what it is,, but I have to agree @PersephoneParlormaid that you shouldn't need to be grateful for something you didn't ask for.
When DH and I had our first child, he was mates with a man at work (Steve) and we had been out about half a dozen times with him and his wife (Linda) in the previous year and a half. As soon as I came home after having our first child (a week later as I'd had an emergency c-section,) I started to try and get in a routine.
On day 6 after coming home, DH had gone back to work, and Steve's wife Linda turned up at my door with a box of doughnuts, and a bottle of wine... at 10am. The baby had been up since 5am, and had just gone to sleep for their morning nap, and I was about to put my head down as I was shattered, when Linda turned up. She actually tried the front door before knocking. She was going to let herself in. Good job the door was locked!
Anyway, long story short, my DH had had a word with Steve and asked him if Linda could pop round and keep me company and offer some support. (She was a mum too, of one son who was 6, and was at school.)
I was so pissed off. She stayed for 4 HOURS. Bleating to me about what I should and shouldn't be doing, and necking all the wine herself (I was breastfeeding so didn't drink any,) and I just wanted her to leave.
I was furious with DH, but he thought I should be grateful and should have thanked him! Again, don't expect me to thank you for something I didn't ask for, and definitely didn't want!
tl;dr she didn't come around again, as I contacted Steve and said I didn't want visitors as I prefer being alone, and that Linda being here for 4 hours was overwhelming and exhausting, and if I do want help I have a mother and a mother in law, They gave us a wide berth after that. Suited me as I found them a bit overbearing anyway. DH was pissed off though. Shouldn't have pushed Linda on me for 4 hours when I didn't ask then!