AITA for doing my laundry and the dishes while my sister-in-law takes a shower?

Some backstory: I (29F) live with my in-laws after moving back from another city with my boyfriend (30M). We both have jobs, pay rent, do chores and buy/cook our own food. After work I usually do all the dishes in the house but last night I went to bed early as I was sick. I woke up really early this morning and couldn’t get back to sleep so I decided to do some of the chores. I loaded the dishwasher but decided to wait to run it after I had breakfast (approx. 8am) and was doing our laundry. My sister-in-law (17F) woke up at 8:30am and went into a shower and I thought “oh no” as I had just started the dishwasher and another load of laundry 20 mins prior. I knew she would freak out as this has happened before. Afterward she got out of the shower, she kept saying how much she hated everyone in the house. AITA?