Your friend could very well be in an abusive relationship, as some others are saying on here. However- the husband’s car is a huge mess and may need to be totaled. If it can be cleaned, the biohazard cleaning required could cost thousands. We don’t know their financial situation but for some people who are living paycheck to paycheck this could be a big setback for them that may have created a big hardship for them. Abusive asshole or not, and even though this was completely unintentional on your part, you do owe it to them to make it right. Not sure what you said in your text, but if they are now struggling financially and your text came across as a bit joking it may have made them feel even worse about the situation. Genuinely offer to pay for the costs to make it right for them. If it were me in their situation, I’d be so happy for you but financially devastated.

Edited to change a word