I (24F) share an apartment with my two roommates/close friends - Nikki and Leah, we all make around the same and split rent equally. Nikki and Leah need to go into work everyday and I am mostly WFH, and, I happen to be a pretty good cook. So we all agreed that instead of eating out or hiring a maid/cook, they would each pay me 5K a month for groceries (so total 10K) and I would not contribute towards the household groceries cost, instead I would cook 2-3 meals daily for all of us, handle the kitchen cleanup, buy groceries etc. This has worked well for us for close to two years at this point.

Now, sometimes in a month, there may be 1K to 3K left over from the 10K they Leah and Nikki have given me, sometimes I get a good deal, sometimes we just eat less. Instead of transferring this money back to them, I have been keeping a "rainy-day" apartment fund, to be used in case of emergencies.

I may have screwed up by not telling them about this fund but that is because Nikki and Leah have a tendency to not save and spend every coin they get, plus it's not like any of us make a large amount of money anyways (we all make like 35K to 40K a month). If I told them about it, anytime there is a concert or a sale, they would demand it and spend it.

Now over two years, this fund has grown to be about 45K, although it isn't life changing money, it is more than any of our monthly salaries and as fate would have it, the rainy day arrived yesterday. I am not very sure what happened but from what I gather, Nikki had been trying her hand at microwave cooking, using recipes from some 5 Min Crafts-esque video and completely sparked/burnt our microwave, which belonged to our landlord.

Now we have to replace the same at out own cost and it is around 12K, and obviously, Nikki will pay for it as it was her fault. Nikki started to panic as she hasn't gotten her salary yet and she is broke. I told her and Leah that it was fine and I had a fund that was about 45K, Nikki could use her half of it to buy a new microwave.

They went ballistic and accused me of making money off them and skimming money of the top. Neither of them are talking to me, I gave them all of the money. Was I really TA??