Worried about 2 year old emotional well-being

We have a new baby in the home. 3 weeks old as of a few days ago. My 2 year old has no friends, (neither do we as parents) and and we have no family near. It’s just me and my husband and now a baby too for her to interact with. Baby cries a lot so sometimes it irritates my 2 year old. My 2 year old still nurses to sleep for nap and bedtime. At times it’s a struggle to get baby down, handed to dad and then toddler to sleep. Yesterday she didn’t get to sleep until 12 midnight and only slept until 7:30am (7 and a half hours of sleep) then her nap was early today but she only slept for an hour. When she woke up she cried and immediately wanted to watch TV (Bambi, it’s what she’s been watching before bedtime as I put sister to sleep) instead she’s been cuddling with her dad on the couch for almost an hour (while he browses online). But my toddler just seems more sad than usual. (More sad than the new usual as of 3 weeks ago if that makes sense). I don’t know what’s normal for a toddler when a newborn comes into the home. I don’t want her to feel too sad or get depressed.