“We have never seen a tornado that big”
The word 'mother' should be capitalised in place of someone's name. However, since you have already mentioned that she is called 'Sonya', the word 'mother' should not be capitalised.
Here are 3 reasons why it is important to laugh.
1. It is important to laugh so that people know that you get the joke or are paying attention.
2. Laughter boosts the immune systym.
3. Laughing relaxes your muscles for up to 45 minutes after.
I don't know if you want the answer to be in paragraphs but i can still do it if that is how you want it.
Obsessed is most appropriate to describe a person whose mind and heart are concentrated on one idea to the exclusion of everything else.
I hope this helps you. ☺