My girlfriend won't talk to me because her mom is sick. What should I do?

My girlfriend's mom got a positive Covid test and now she told me she's not in the mood for chitchat because she wants to take care of her. I don't want to stress her out even more but it's getting to me. Badly. And I don't know what to do.
My girlfriend won't talk to me because her mom is sick. What should I do?
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